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

How to upgrade peanut butter and jelly
Use a different nut butter.
If you want to make a simple swap that will give your sandwich a dramatically different taste, swap a different nut butter for the peanut butter. You could use cashew, almond, sunflower, or hazelnut butter.

Options: a). Many of these are available in creamy or crunchy varieties. You could use a chocolate-hazelnut or chocolate-cashew spread for an even richer filling.; b). Use nut butter as opposed to regular peanut butter. Add your favorite cheese, hummus, and toppings if you like to order peanut butter as a snack.; c). Don't use peanut butter if you want to save money on the peanut butter, or you could use an acidic substitution like lemon lime instead. Ensure you use a raw protein sandwich.; d). Mix them up when you're gluten-free and avoid frying your sandwich. You don't have to mix the peanut butter and jelly together to get an easy swap.;
The answer is:
a).