The force required to detach a grain of pollen from an avocado stamen is approximately 4.0 × 10-8 N. What is the maximum distance at which the electrostatic force between a bee and a grain of pollen is sufficient to detach the pollen? Treat the bee and pollen as point charges, and assume the pollen has a charge opposite in sign and equal in magnitude to the bee.

A. 4.7 × 10-7 m

B. 1.9 mm

C. 4.4 cm

D. 220 m