Multiply Write the Answer in the Form $a + b i$

Multiple Choice

Multiply. Write the answer in the form $a + b i$ . $( 5 - 2 i ) ( 2 + 5 i )$

A) $12 + 5 i$
B) $16 + 21 i$
C) $14 - 2 i$
D) $18 - 2 i$
E) $20 + 21 i$