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: In what time will a train 45 m long cross an electric pole, it its speed be 108 km/hr?

 Option A: 0.5

 Option B: 1.25

 Option C: 1.5

 Option D: 2.5

 Option E: 3.5

Option C