Three Out of Ten Motorcyclists Wear Safety Helmets $\frac { 1 } { 10 }$

Multiple Choice

Three out of ten motorcyclists wear safety helmets. If two motorcyclists are chosen, what is the probability that both wear a safety helmet?

A) $\frac { 1 } { 10 }$
B) $\frac { 9 } { 80 }$
C) $\frac { 1 } { 70 }$
D) $\frac { 9 } { 100 }$
E) $\frac { 9 } { 70 }$