If k is a positive integer, which represent an even integer that is twice the value of an odd integer?

Question

A) 2k

B)2k+3

C)2k+4

D)4k+1

E)4k+2

Please explain how you get the answer

Answer 1

2 into any number will always be even. So 2k will be even but 2k+1 will be odd.
If now 2k+1 is multiplied by 2 it would be even i.e. nothing but 4k+2