If the Sun Converts 5 * 10¹¹ Kg of H

Multiple Choice

If the Sun converts 5 * 10¹¹ kg of H to He per second and 10 percent of the Sun's total mass is available for nuclear burning, how long might we expect the Sun to live?

A) 10⁴ years
B) 10⁸ years
C) 10¹⁰ years
D) 10¹¹ years
E) 10¹⁴ years