Carnot engine working between $300 \mathrm{~K}$ and $600 \mathrm{~K}$ has work output of $800 \mathrm{~J}$ per cycle. What is amount of heat energy supplied to the engine from source per cycle
(A) $1600\{\mathrm{~J} /$ (cycle)\}
(B) $2000\{\mathrm{~J} /(\mathrm{cycle})\}$
(C) $1000\{\mathrm{~J} /($ cycle $)\}$
(D) $1800\{\mathrm{~J} /($ cycle $)\}$