Sally has some cubes that have a side length of 1/4 in. She put 12 of the cubes in a box. The box has dimensions of 1 in. x 2 in. x 3 in. How many more cubes can Sally fit in the box?
A: 84 cubes
B: 96 cubes
C: 372 cubes
D: 384 cubes
plz help