The number 219 can be written as sum of the squares of 3 different positive integers. What is the sum of these 3 different integers?	Choose one
A) 20
B) 21
C) 19
D) 17
E) 15

Rationale: "sum of the squares of 3 different positive integers = 219 13 ^ 2 + 7 ^ 2 + 1 ^ 2 = 219 now , sum of these 3 different integers = 13 + 7 + 1 = 21 ans - b"
Answer: B