What is the sum of 20 consecutive integers from -9 inclusive, in a increasing order?  Choose the correct choice from the following answers.
A) - 9	B) 9	C) - 10	D) 10	E) 20

Rationale: "from - 9 to - 1 - - > 9 nos . zero - - > 1 number from + 1 to + 9 - - > 9 nos . when we add up nos . from - 9 to + 9 sum will be zero . total 19 nos will be added . 20 th number will be 10 . sum of these 20 nos . = 10 . d is the answer ."
Answer: D