Expand Assume That All Variables Represent Positive Real Numbers $\log _ { \mathrm { b } } \mathrm { yz } 4$

Multiple Choice

Expand. Assume that all variables represent positive real numbers.
- $\log _ { \mathrm { b } } \mathrm { yz } 4$

A) $4 \log _ { \mathrm { b } } \mathrm { yz }$
B) $4 \log _ { \mathrm { b } } \mathrm { y } + 4 \log _ { \mathrm { b } } \mathrm { z }$
C) $\log _ { b } y + 4 \log _ { b } z$
D) $\log _ { b } y + \log _ { b } 4 z$