The correct option is A Hydrogen and Helium
The
Sun is a big ball of gas and plasma. The main gases are hydrogen or helium, but
there are also small amounts of other elements such as oxygen, carbon,
nitrogen, magnesium and iron. The discovery of Helium was done by observing the
spectrum of the Sun. Later, it was found on Earth. Sun is composed of 75 % of
hydrogen and 26.5 % of Helium. Hydrogen is converted into the energy in core of
sun.