Two cubes of their volumes in the ratio 343 : 729. The ratio of their surface area is: Choose the correct choice from the following answers: A) 7 : 9 B) 2 : 5 C) 3 : 5 D) 1 : 5 E) 4 : 5

Rationale: "the ratio of their surface area is 343 : 729 7 : 9 answer is a ."
Answer: A