Write the Complex Conjugate of the Complex Number $5 + 3 i$

Multiple Choice

Write the complex conjugate of the complex number.Then multiply the number by its complex conjugate.
$5 + 3 i$

A) $5 + 3 i , 34$
B) $5 - 3 i , 9$
C) $5 + 3 i , 9$
D) $- 5 - 3 i , 34$
E) $5 - 3 i , 34$