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 the mass of a single hydrogen nucleus is 1.7 * 10^-27 kg, how many net proton-proton reactions go on per second in the Sun? What is the luminosity produced if the mass difference between a single helium nucleus and four hydrogen nuclei is 4 *10^-29 kg? Note that 1 watt =1 m² kg/s³.

A) 7 *10³⁷ reactions per second; 3 *10²⁶ watts
B) 3 * 10³⁸ reactions per second; 10²⁷ watts
C) 3*10³⁸ reactions per second; 4 * 10²⁶ watts
D) 7 *10³⁷ reactions per second; 5 * 10²⁵ watts
E) 3 * 10³⁷ reactions per second; 6 * 10²⁴ watts