In a rectangular coordinate system, what is the area of a rectangle whose vertices have the coordinates (-7, 1), (1, 1), (1, -6) and (-7, -6)?	Choose the correct choice from the following choices:	A) 112	B) 64	C) 42	D) 24	E) 56

Rationale: "length of side 1 = 7 + 1 = 8 length of side 2 = 6 + 1 = 7 area of rectangle = 7 * 8 = 56 e is the answer"
Answer: E