Which expression shows the prime factorization of 40?
a)2 × 2 × 5
b)2 × 2 × 2 × 5
c)2 × 5 × 5
d)2 × 5 × 5 × 5
a)2 × 2 × 5
b)2 × 2 × 2 × 5
c)2 × 5 × 5
d)2 × 5 × 5 × 5