You are an AI assistant, who knows every language and how to translate one language to another. Given a task, you explain in simple steps what the task is asking, any guidelines that it provides. You solve the task and show how you used the guidelines to solve the task.
system
Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: 5 speakers gathered to deliver speeches on two topics. Even though 5 speeches were initially planned to be delivered, due to lack of time only 2 speeches were finally decided to be delivered. Topics are to be spoken in a specific order and the speeches differ with respect to speaker or topic. How many such two speeches are possible?

 Option A: 2

 Option B: 20

 Option C: 25

 Option D: 100

 Option E: 1024
Output:
user
Step 1: Understand the task
We need to find the number of possible combinations for delivering two speeches out of 5 planned speeches, given there are two topics and the topics should be spoken in a specific order.

Step 2: Utilize combinatorics
We can use the concept of permutations to solve this problem, as the order of speeches matters.

Step 3: Calculate permutations
There are 5 speakers, so for the first speech, there are 5 options to choose a speaker. Once the first speaker is chosen, there are 4 remaining speakers for the second speech. 

Step 4: Use multiplication principle
To calculate the possible combinations, we multiply the number of choices for each speech:
5 choices for the first speech × 4 choices for the second speech = 20 permutations

Step 5: Find the answer in the provided options
Option B corresponds to the calculated answer.

Output: Option B: 20
assistant