What Mass Would Have to Be Compressed to a Radius $1.0 \times 10 ^ { - 15 } \mathrm {~m}$

Multiple Choice

What mass would have to be compressed to a radius of $1.0 \times 10 ^ { - 15 } \mathrm {~m}$ (the order of magnitude of the radius of an atomic nucleus) in order for it to become a black hole? ( $G = 6.67 \times 10 ^ { - 11 } \mathrm {~N}$ .
$\mathrm { m } ^ { 2 } / \mathrm { kg } ^ { 2 } , c = 3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ )

A) $6.7 \times 10 ^ { 11 } \mathrm {~kg}$
B) $2.2 \times 10 ^ { 3 } \mathrm {~kg}$
C) $1.1 \times 10 ^ { - 6 } \mathrm {~kg}$
D) $8.3 \times 10 ^ { 15 } \mathrm {~kg}$
E) $4.1 \times 10 ^ { - 8 } \mathrm {~kg}$