A brand manager for a certain company must determine how much time to allocate between radio and television advertising during the next month. Market research has provided estimates of the audience exposure for each minute of advertising in each medium, which it would like to maximize. Costs per minute of advertising are also known, and the manager has a limited budget of $$25,000.$The manager has decided that because television ads have been found to be much more effective than radio ads, at least $75\%$ of the time should be allocated to television. Use the following data to complete parts a and b$.$

Identify the constraints in simple verbal expressions. Select all that apply.

A$.$ The number of TV ads and radio ads cannot be negative.

B$.$ Time spent on TV ads must be at least $75\%$ of the time spent on radio ads.

C$.$ The limited budget must be greater than or equal to the average cost per minute of ads multiplied by the sum of the minutes spent on radio ads and the minutes spent on TV ads.

D$.$ The money spent on the radio ads plus the money spent on TV ads cannot be more than the limited budget.

E$.$ Time spent on TV ads must be at least $75\%$ of the total time spent on ads.