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: In a kilometer race, A beats B by 54 meters or 12 seconds. What time does A take to complete the race?

 Option A: 212

 Option B: 190

 Option C: 277

 Option D: 181

 Option E: 122
[EX A]: Option A

[EX Q]: Question: Triangle STV has sides ST = TV = 26, and SV = 20. What is the area?

 Option A: 160

 Option B: 180

 Option C: 200

 Option D: 220

 Option E: 240
[EX A]: Option E

[EX Q]: Question: The LCM of two numbers is 2310 and HCF is 26. If one of the numbers is 210. Then what is the other number ?

 Option A: 715

 Option B: 825

 Option C: 286

 Option D: 582

 Option E: 465
[EX A]:
Option C