The Improper Double Integral DA, Where D Is $\le$

Multiple Choice

The improper double integral dA, where D is the planar region described by1 $\le$ x < $\infty$ , 0 $\le$ y $\le$ x⁸, converges for all real numbers k such that

A) k $\ge$ - 7
B) k > 5
C) k < 9
D) k <- 7
E) k $\le$ 5