All sides of the convex pentagon A B C D E are of equal length, and \angle A=\angle B= 90^{\circ}. What is the degree measure of \angle E ?

**Answer Choices**

A. 90

B. 108

C. 120

D. 144

E. 150

All sides of the convex pentagon A B C D E are of equal length, and \angle A=\angle B= 90^{\circ}. What is the degree measure of \angle E ?

**Answer Choices**

A. 90

B. 108

C. 120

D. 144

E. 150