What is the value of: -9^7 + 9^9 ?  Select:	A) 9^2	B) -18^16	C) 63(9^7)	D) -80(9^7)	E) 80(9^7)
-9^7 + 9^9 = 9^7 (-1 + 9^2) = 9^7 (-1 + 81) = 80 (9^7), Answer 80(9^7).
<result>E</result>
What is the value of: -9^7 + 9^9 ?