A 70-μC Point Charge and A A 9.0 $9.0 - \mu \mathrm { C }$

Multiple Choice

A 7.0-μC point charge and a $9.0 - \mu \mathrm { C }$ point charge are initially extremely far apart.How much work does it take to bring the $7.0 - \mu \mathrm { C }$ point charge to the point $x = 3.0 \mathrm {~mm}$ $y = 0.0 \mathrm {~mm}$ ,and the $9.0 - \mu \mathrm { C }$ point charge to the point $x = - 3.0 \mathrm {~mm}$ $y = 0.0 \mathrm {~mm} ?$ (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

A) 95 J
B) 190 J
C) 63 J
D) 16 J