4. Pete's family bought a 12-slice pizza. Pete ate one slice and shared another slice equally with his brother Paul. Then Pete ate ( ) of the whole pizza.
(A) $\frac{1}{24}$
(B) $\frac{1}{12}$
(C) $\frac{1}{8}$
(D) $\frac{1}{6}$
(E) $\frac{1}{4}$
$\begin{array}{l}\text { 4. C. } \\ \frac{1.5}{12}=\frac{1}{8} \text {. }\end{array}$