Perform the Operations and Simplify $$\frac { 5 a } { 3 } \cdot \frac { 2 } { 7 b }$$

Multiple Choice

Perform the operations and simplify. $$\frac { 5 a } { 3 } \cdot \frac { 2 } { 7 b }$$
Assume that no denominators are 0 .

A) $\frac { 3 a } { b 7 }$
B) $\frac { 5 } { 2 }$
C) $\frac { 2 } { 5 }$
D) $\frac { 10 a } { 21 b }$