Free Practice 6.G.A.2 – 9005401

Jimmy is filling a rectangular box with sugar cubes. If the dimensions of the box are $12$" by $16$" by $12$" and the sugar cubes have side length of $4$", then how many sugar cubes can fit in the box?
A. $12$
B. $144$
C. $36$
D. $48$
E. $576$