Diners at a certain restaurant can choose either a soup or salad from 4 choices, an entree from 5 offerings, two side dishes from 5 options, and, finally, one of 4 dessert cakes. to the nearest whole number, how many months could a person eat at this restaurant without having to order the same meal twice? (assume 30 days per month.)
a) 20b) 27c) 63d) 160e) 800