Find the Distance (In Miles) Traveled by a Car Which $s$

Multiple Choice

Find the distance (in miles) traveled by a car which moves at speed $s$ (in mi/h) for two hours, then moves $10$ mi $/$ h slower for another two hours.

A) $\frac { 14 } { 3 } s - \frac { 15 } { 2 }$
B) $4 s - 20$
C) $13 s - 15$
D) $\frac { 17 } { 2 } s - \frac { 227 } { 2 }$
E) $12 s - 1$