A blackbody is a body which absorbs all incident radiation falling on it and the radiation emitted by it is called as Blackbody Radiation.
A 100% Blackbody doesn’t Reflect as it absorbs all the incident radiation neither does it refracts radiation as it does not have refractive properties.
Lampblack is close to a black body, it reflects about 1% of the incident radiation
Thus, options (c) and (d) are correct options.