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.

[EX Q]: Question: It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the car is?

 Option A: 3:4

 Option B: 7:6

 Option C: 1:4

 Option D: 5:4

 Option E: 2:4
[EX A]: Option A

[EX Q]: Question: The product of the prime integers between 23 and 35, inclusive, is:

 Option A: 50! – 40!

 Option B: 99,029

 Option C: 2,303

 Option D: 22,011

 Option E: 2,000
[EX A]: Option D

[EX Q]: Question: 5358 x 52 = ?

 Option A: 273762

 Option B: 278616

 Option C: 273298

 Option D: 273258

 Option E: 277382
[EX A]:
Option B