An Asteroid of Radius $2.1 \mathrm{~km}$ Is Observed to Have an Escape Speed Equal to a an Escape

An asteroid of radius $2.1 \mathrm{~km}$ is observed to have an escape speed equal to a typical person's maximum jumping speed, $3.0 \mathrm{~m} / \mathrm{s}$ . What is its mass?

A) $2.8 \times 1014 \mathrm{~kg}$
B) $4.2 \times 1014 \mathrm{~kg}$
C) $0.5 \times 1014 \mathrm{~kg}$
D) $1.4 \times 1014 \mathrm{~kg}$
E) $5.7 \times 10^{14} \mathrm{~kg}$