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 least common multiple of two prime numbers x and y is 10, where x > y, then the value of 2x + y is

 Option A: 7

 Option B: 9

 Option C: 11

 Option D: 12

 Option E: 21
[EX A]: Option D

[EX Q]: Question: Look at this series: -2, 0, 2, 4,... What number should come next?

 Option A: 6

 Option B: 12

 Option C: 8

 Option D: 9

 Option E: 10
[EX A]: Option A

[EX Q]: Question: Mars travels around the sun at a speed of approximately 15 miles per second. The approximate speed is how many miles per hour?

 Option A: 48,000

 Option B: 51,000

 Option C: 54,000

 Option D: 57,000

 Option E: 60,000
[EX A]:
Option C