Use the Cofunction Identities to Evaluate the Expression Below Without $\cos ^ { 2 } 20 ^ { \circ } + \cos ^ { 2 } 57 ^ { \circ } + \cos ^ { 2 } 70 ^ { \circ } + \cos ^ { 2 } 33 ^ { \circ }$

Multiple Choice

Use the cofunction identities to evaluate the expression below without the aid of a calculator. $\cos ^ { 2 } 20 ^ { \circ } + \cos ^ { 2 } 57 ^ { \circ } + \cos ^ { 2 } 70 ^ { \circ } + \cos ^ { 2 } 33 ^ { \circ }$

A) 1
B) 2
C) -1
D) 0
E) $\frac { 1 } { 2 }$