A Rancher Has 320 Feet of Fencing to Enclose Two $x = 40.00$

Multiple Choice

A rancher has 320 feet of fencing to enclose two adjacent rectangular corrals (see figure) . What dimensions should be used so that the enclosed area will be a maximum?

A) $x = 40.00$ and $y = 53.33$
B) $x = 8.00$ and $y = 96.00$
C) $x = 16.00$ and $y = 106.67$
D) $x = 53.33$ and $y = 40.00$
E) $x = 24.00$ and $y = 64.00$