Which subatomic particle has the smallest mass

The  subatomic  particle  that has the smallest  mass is   electrons

Explanation

Atom  has  three sub particles , that is neutron. protons and  electrons.Electrons    has  the smallest  mass since  it has a mass of 9.11 x10 ⁻³¹kg
Both  neutrons  and protons  has  the same  mass,that  is the mass  of 1.67  x  10⁻²⁷ kgsince 9.11 x 10⁻³¹kg  is small than 1.67 x 10⁻²⁷kg  electrons   has  the smallest  mass

The answer is b i think