Two Point Charges,separated by 1

Two point charges,separated by 1.5 cm,have charge values of +2.0 and −4.0 µC,respectively.What is the value of the mutual force between them? (k_e = 8.99 × 10⁹ N⋅m²/C²)

A) 72 N
B) 1.4 × 10−⁸ N
C) 5.0 × 10−¹² N
D) 0.7 × 10−³ N
E) ​86 N