A heat engine absorbs heat `Q_(1)` at temperature `T_(1)` and `Q_(2)` at temperature `T_(2)` . Work done by the engine is `(Q_(1)+Q_(2))` . This data:
A. Violates `1^(st)` law of thermodynamics
B. Violates `1^(st)` law of thermodynamics if `Q_(1)` is -ve
C. Violates `1^(st)` law of thermodynamics if `Q_(2)` is -ve
D. Does not violate `1^(st)` law of thermodynamics
