What is (5.2 × 102) × (1.2 × 104)?
A.
6.4 × 10^8
B.
6.24 × 10^8
C.
6.4 × 10^6
D.
6.24 × 10^6
A.
6.4 × 10^8
B.
6.24 × 10^8
C.
6.4 × 10^6
D.
6.24 × 10^6