Vicki gives her children dessert 30% of the time. if her children want to know the probability that they will eat dessert 3 of the 7 days this week, which simulation design has an appropriate device and a correct trial?

a) roll a die letting 1 represent eating dessert and 2-6 represent not eating dessert. roll the die three times.
b) roll a die letting 1 represent eating dessert and 2-6 represent not eating dessert. roll the die seven times.
c) using a table of random digits select a digit between 0 and 9. let 0-2 represent eating dessert and 3-9 represent not eating dessert. select three digits.
d) using a table of random digits select a digit between 0 and 9. let 0-2 represent eating dessert and 3-9 represent not eating dessert. select seven digits.