If n divided by 7 has a remainder of 2, what is the remainder when 2 times n is divided by 7?  Select the correct option.
A) 1
B) 2
C) 3
D) 4
E) 6

Rationale: "as per question = > n = 7 p + 2 for some integer p hence 2 n = > 14 q + 4 = > remainder = > 4 for some integer q alternatively = > n = 2 > 2 n = > 4 = > 4 divided by 7 will leave a remainder 4 hence d"
Answer: D