A lady builds 8cm length, 15cm width, and 5cm height box using 10cubic cm cubes. What is the minimum number of cubes required to build the box?	Choices:
A) 107  B) 60  C) 70  D) 89  E) 78

Rationale: "number of cubes required = volume of box / volume of cube = 8 * 15 * 5 / 10 = 60 cubes answer : b"
Answer: B