Find the Value of the Expression $\log _ { b } A = 5$

Multiple Choice

Find the value of the expression.
-Let $\log _ { b } A = 5$ and $\log _ { b } B = - 4$ . Find $\log _ { b } B ^ { 2 }$ .

A) $- 8$
B) $- 16$
C) 16
D) 10