If Daniel is 18 years old in December and is 10 years younger than his sister, which of the following could be true?
I. Daniel's Sister will be 28 years in December.
II. When Daniel is 20 years, his sister will be 25 years.
III. Daniel is older than his sister.	Choose the correct choice from the following options:
A) I only
B) I and II only
C) I and III only
D) II and III only
E) I, II and III
Let’s check each statement.   Statement I: Daniel's Sister will be 28 years in December. There is 10 years difference in their ages so the sister's age will be 20 + 8= 
<gadget id="calculator">20 + 8</gadget>
<output>28</output>
28, in which case Statement I is TRUE.   Statement II: When Daniel is 20 years, his sister will be 25 years. There is 10 years difference in their ages so the sister's age will be 20 + 8= 
<gadget id="calculator">20 + 8</gadget>
<output>28</output>
28, in which case Statement II can NEVER be TRUE.   Statement III: Daniel is older than his sister. When Daniel is 10 the sister will be 28, in which case Statement III can NEVER BE TRUE   Only Statement I is TRUE   So, the Correct answer is I only
<result>A</result>
If Daniel is 18 years old in December and is 10 years younger than his sister, which of the following could be true?
I. Daniel's Sister will be 28 years in December.
II. When Daniel is 20 years, his sister will be 25 years.
III. Daniel is older than his sister.