If x is equal to the sum of the integers from 20 to 40, inclusive, and y is the number of even integers from 20 to 40, inclusive, what is the value of x + y?  Choose the correct choice
A) 601	B) 611	C) 621	D) 631	E) 641

Rationale: "x = 20 + 21 + . . . + 40 = 21 ( 30 ) = 630 y = 11 x + y = 641 the answer is e ."
Answer: E