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.

[Q]: Question: How many seconds will a train 100 meters long take to cross a bridge 250 meters long if the speed of the train is 36 kmph?

 Option A: 54 sec

 Option B: 35 sec

 Option C: 25 sec

 Option D: 45 sec

 Option E: 24 sec
[A]: Option B


[Q]: Question: In the xy-plane, a line has slope 5 and x-intercept 3. What is the y-intercept of the line?

 Option A: -15

 Option B: -3

 Option C: 0

 Option D: 3

 Option E: 9
[A]: Option A


[Q]: Question: What is the unit digit in {(6374)1793 x (625)317 x (341491)}?

 Option A: 0

 Option B: 2

 Option C: 3

 Option D: 5

 Option E: 7
[A]:
Option A