This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to decorate a room for a party
Consider the occasion.
The type of party that you're throwing will play a big role in how you decorate. For example, you'll probably decorate differently for a festive birthday party than you would for an elegant 25th anniversary party.

OPT:
(A). Think about your mood for the party and what you hope for from it. Think about what type of food you want to serve and how much money you'll need to cover all of the extra ingredients and equipment.;
(B). Before you dive into decorating your room, think about what other people will be attending. Take some time to examine your room.;
(C). If you're hosting a holiday party, such as a christmas or halloween get-together, you probably have a good idea of what the decor should look like. Take the occasion into consideration as you start to think about decorations.;
(D). There are certain factors to consider when deciding how you might decorate for a large party. A big party means a large number of guests, and a small party means lots of people.;
The answer is:
(C).