Multiply Using One of the Rules for the Square of a Binomial

Multiple Choice

Multiply using one of the rules for the square of a binomial. Assume any variable exponents represent whole numbers.
- $$( x + 8 ) ^ { 2 }$$

A) $x ^ { 2 } + 64$
B) $x ^ { 2 } + 16 x + 64$
C) $x + 64$
D) $64 x ^ { 2 } + 16 x + 64$