Thermonuclear Fusion Reactions in the Core of the Sun Convert

Thermonuclear fusion reactions in the core of the Sun convert four hydrogen atoms into one helium atom.The helium atom has:

A) an undetermined amount of mass, depending on the temperature at which the reaction occurs.
B) the same mass as the four hydrogen atoms because the mass of any product has to equal the sum of the mass of its parts.
C) less mass than the four hydrogen atoms; the mass loss is converted to energy via the equation E = mc².
D) more mass than the four hydrogen atoms; the energy produced in the reaction appears as the extra mass from the equation E = mc².