Simplify $( 5 + 2 i ) ^ { 2 } - ( 5 - 2 i ) ^ { 2 }$

Multiple Choice

Simplify $( 5 + 2 i ) ^ { 2 } - ( 5 - 2 i ) ^ { 2 }$ and write the answer in standard form.

A) $0$
B) $40 i$
C) $50 + 40 i$
D) $50 + 8 i$
E) $10 + 8 i$