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: If the charge of staying in a student youth hostel $18.00/day for the first week, and $15.00/day for each additional week, How much does it cost to stay for 23 days?

 Option A: $336

 Option B: $289

 Option C: $282

 Option D: $274

 Option E: $286
[EX A]: Option A

[EX Q]: Question: Factor (x + 4)3 - 9x - 36 =

 Option A: (x - 4

 Option B: (x + 6

 Option C: (x + 4

 Option D: (x + 4

 Option E: None
[EX A]: Option D

[EX Q]: Question: In what time will a railway train 50 m long moving at the rate of 36 kmph pass a telegraph post on its way?

 Option A: 5 sec

 Option B: 4 sec

 Option C: 3 sec

 Option D: 6 sec

 Option E: 1 sec
[EX A]:
Option A