When 34, 36, and 38 are each divided by positive integer d

[Brent@GMATPrepNow]

When 34, 36, and 38 are each divided by positive integer d, the remainders are 4, 0, and 2, respectively. When 41, 43, and 45 are each divided by positive integer k, the remainders are 5, 7, and 0, respectively. What is the value of d + k?

A) 12
B) 15
C) 18
D) 21
E) 24

Answer: B
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