Dana ordered 6 pizzas for her party and each pizza is sliced into quarters. She says in order to find out how many slices there are, she needs to calculate 
6 ÷ 0ne fourth. Which multiplication expression will also solve the problem of how many slices there are?
 A.24 × one sixth 
 B.4 × one sixth
 C.6 × one fourth
 D.6 × 4 
plzzzzz help I'm not good at math