If k, (k+200), (k+350), and 15*K are all multiples of A, then A could equal which of the following ?
Choose the correct option:  A) 20  B) A=25  C) 75  D) 100  E) 150
{Multiple of A} - {Multiple of A} = {Multiple of A}.   (K+200) - k = 200 = {Multiple of A}.   (K+350) - k = 350 = {Multiple of A}.   Both 200 and 350 are multiples of only option B.   Answer: A=25.
<result>B</result>
If k, (k+200), (k+350), and 15*K are all multiples of A, then A could equal which of the following ?