Four Hundred Accidents That Occurred on a Saturday Night Were $\frac { 77 } { 400 }$

Multiple Choice

Four hundred accidents that occurred on a Saturday night were analyzed. The number of vehicles involved and whether alcohol played a role in the accident were recorded. The results are shown
Below:

Suppose that one of the 400 accidents is chosen at random. What is the probability that the accident involved alcohol or a single car?

A) $\frac { 77 } { 400 }$
B) $\frac { 17 } { 40 }$
C) $\frac { 197 } { 400 }$
D) $\frac { 1 } { 8 }$