Find the Prime Factorization of the Number $3 ^ { 2 } \cdot 5$

Multiple Choice

Find the prime factorization of the number. Write any repeated factors using exponents.
-45

A) $3 ^ { 2 } \cdot 5$
B) 9 ·3
C) $5 ^ { 2 }$
D) 9 ·5