Perform the Indicated Operation $( 5 + 7 i ) ( 5 - 7 i )$

Multiple Choice

Perform the indicated operation. Write the result in the form a + bi.
- $( 5 + 7 i ) ( 5 - 7 i )$

A) $25 - 49 \mathrm { i }$
B) $- 24 + 0 \mathrm { i }$
C) $25 - 49 i ^ { 2 }$
D) $74 + 0 \mathrm { i }$