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: Consider Input: Question: Rs. 6000 is lent out in two parts. One part is lent at 5% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?

Option A: 5:1

Option B: 5:5

Option C: 5:8

Option D: 5:4

Option E: 5:2

Output: Option B

Input: Consider Input: Question: Find the number of square tiles to cover the floor of a room measuring 6 m * 11 m leaving 0.50 m space around the room. A side of square tile is given to be 50 cms?

Option A: 187

Option B: 476

Option C: 200

Option D: 208

Option E: 276

Output: Option C

Input: Consider Input: Question: Two trains of length 170 m and 200 m are 100 m apart. They start moving towards each other on parallel tracks, at speeds 54 kmph and 72 kmph. In how much time will the trains cross each other?

Option A: 100/7 sec

Option B: 80/7 sec

Option C: 57/7 sec

Option D: 120/7 sec

Option E: 114/7 sec
Output: Option E