For each of the cases below determine if the heat engine satisfies the first law (energy equation)

Question:

For each of the cases below determine if the heat engine satisfies the first law (energy equation) and if it violates the second law.
a. Q.H = 6 kW, Q.L = 4 kW, W. = 2 kW
b. Q.H = 6 kW, Q.L = 0 kW, W. = 6 kW
c. Q.H = 6 kW, Q.L = 2 kW, W. = 5 kW
d. Q.H = 6 kW, Q.L = 6 kW, W. = 0 kW