Oreo sample survey help please?

hello, so for my statistics class i am doing a sample survey on oreos, how do majority of people eat them? so i got my data by asking 100 people. 38 of people prefer to take them apart and eat one side,41 dip in milk, and the other 21 either eat them with peanut butter or just plain. my question is what do i do next, it says i need to compute an appropiate summary for my experiment such as sample proportions or 5-number summaries. I also need to decide the appropiate inference test for my projects design, ztest,ttest,etc. I need help pleasse what do i do?