If f1 (t) and f2 (f) are two functions of time and a and b are constants, then

• A. L [af1(t) + bf2(t)] = aF1(s) + bF2(s)
• B. L [af1(t) + bf2(t)] = aF1(s) - bF2(s)
• C. L [af1(t) + bf2(t)] =[aF1(s)]/[bF2(s]
• D. None of the above