Multiply or Divide as Indicated $3 \frac { 1 } { 3 } \cdot 1 \frac { 1 } { 5 }$

Multiply or divide as indicated. Write the answer in lowest terms.
- $3 \frac { 1 } { 3 } \cdot 1 \frac { 1 } { 5 }$

A) 5

B) $3 \frac { 2 } { 15 }$

C) 7

D) 4