Two Tiny Beads,each of Mass 3

Multiple Choice

Two tiny beads,each of mass 3.2 g,carry equal-magnitude charges.When they are placed 6.4 cm apart and released in outer space,they begin to accelerate toward each other at 538 m/s².What is the magnitude of the charge on each bead? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

A) 510 nC
B) 44 nC
C) 1800 nC
D) 890 nC
E) 1300 nC