Suppose You Notice That More and More People Are Driving

Suppose you notice that more and more people are driving gas-guzzling cars. Since you drive an economy car, their increased demand for gas:

A) does not affect you.
B) causes companies to charge a lower price, thus benefiting you.
C) causes the price you pay for gas to increase.
D) does not change the price you pay, but reduces the quantity of gas supplied.