The relative charge on an electron, proton and a neutron are:

The correct option is B -1, +1, 0
An electron has an absolute charge of $-1.602\times {10}^{-19}C$ and a proton has a charge of
$+1.602\times {10}^{-19}$ C and a neutron has no charge.
So, the relative charge on an electron, proton and a neutron respectively are -1, +1, 0.