Diamond Jeweler's is trying to determine how to advertise in order to maximize their exposure. Their weekly advertising budget is $10,000. They are considering three possible media: TV, newspaper, and radio. Information regarding cost and exposure is given in the table below:

Medium	audience reached per ad	cost per ad ($)	maximum ads per week
TV	7,000	800	10
Newspaper	8,500	1000	7
Radio	3,000	400	20

Let T = the # of TV ads, N = the # of newspaper ads, and R = the # of radio ads.

Which of the following set of inequalities properly represent the limits on advertisements per week by media?

Select one:

a. T10; N7; R20b. T + N + R 37c. 10T + 7N + 20R 37d. T + N + R 37e. T 10; N 7; R 20