Trevor surveyed attendees at a comic book convention about the distance they lived from the convention center and the type of ticket they purchased for the event. The data he gathered is shown in the two-way table below.
Tickets Bought for Comic Convention
Live within 20
Miles of
Convention Center
Live Farther than 20 Miles from Convention Center
One-Day Ticket
74
33
Multi-Day Ticket
18
12
How many people did Trevor survey?
A.74
B.92
C.107
D.137