Inna dark room with ambient temperature T0, a black body is kept at a temperature T. Keeping the temperature of the black body constant (at T), sunrays are allowed to fall on the black body through a hole in the roof of the dark room. Assuming that there is no change in the ambient temperature of the room, which of the following statement(s) is/are correct?

• A. The quantity of radiation absorbed by the black body in unit time will increase.
• B. Since emissivity = absorptivity, hence the quantity of radiation emitted by black body in unit time will increase.
• C. Black body radiates more energy in unit time in the visible spectrum.
• D. The reflected energy in unit time by the black body remains same.