50 POINTS AND BRAINLYEST
A right rectangular prism has these dimensions:

Length − Fraction 1 and 1 over 2 units
Width − Fraction 1 over 2 unit
Height − Fraction 3 over 4 unit

How many cubes of side length Fraction 1 over 4 units are required to completely pack the prism without any gap or overlap?

36
45
51
60