3. you are looking into two long distance telephone plans offered by gt& t. the “one rate 5 cents” plan has a monthly fee of $7.95 and all calls are 5 cents per minute. the “one rate 7 cents” plan has a monthly fee of $4.95 and all calls are 7 cents per minute. under what circumstances is one plan less expensive than the other? a. the "one rate 5 cents" plan is less expensive for calls lasting less than 1.5 minutes. the "one rate 7 cents" plan is less expensive for calls lasting more than 1.5 minutes. b. the "one rate 7 cents" plan is less expensive for calls lasting less than 1.5 minutes. the "one rate 5 cents" plan is less expensive for calls lasting more than 1.5 minutes. c. the "one rate 5 cents" plan is less expensive for calls lasting less than 150 minutes. the "one rate 7 cents" plan is less expensive for calls lasting more than 150 minutes. d. the "one rate 7 cents" plan is less expensive for calls lasting less than 150 minutes. the "one rate 5 cents" plan is less expensive for calls lasting more than 150 minutes.