Critical Reasoning

In 1984, network television commercials accounted for 80% of all network and
non-network television advertising revenue. In 2004, that figure was 60%. During
that same period, operating costs for the networks remained steady. and in 2004
every major network announced record-setting profits.

The information above, if true, supports which of the following conclusions?

(A) Between 1984 and 2004, the number of homes with access to non-network television channels increased by more than 20%.
(B) Teenagers comprise a growing proportion of television viewers, and teenagers prefer to watch non-network television shows .
(C) The amount of advertising revenue earned from non-network television commercials in 2004 was greater than the amount of revenue earned by network television commercials in 1984.
(D) Between 1984 and 2004, advertising revenue earned from non-network television commercials grew at a faster rate than revenue earned from network television commercials.
(E) Soon advertising revenue from non-network television commercials will surpass revenue from network television commercials.

OA is D