The Radius of a Black Hole Is the Distance from the Black

The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light (c = 3.0 * 10⁸ m/s) .What is the radius of a 24 solar mass black hole?

A) 6.3 * 10⁶ m
B) 7.1 * 10⁴ m
C) 5.4 * 10⁵ m
D) 7.0 * 10⁸ m
E) 2.2 * 10⁷ m