The Figure Shows the Results of a Recent Survey in Which

Multiple Choice

The figure shows the results of a recent survey in which 14 adults were asked to grade U.S.public schools.An adult is selected at random.What is the probability the adult will give the U.S.public schools a C or a D
( $a = 14 \%$ , $b = 50 \%$ )

A) $\frac { 16 } { 25 }$
B) $\frac { 1 } { 2 }$
C) $\frac { 50 } { 7 }$
D) $\frac { 25 } { 16 }$
E) $\frac { 7 } { 50 }$