11. 假設一拉氏函數為F(s)=,請利用反拉氏轉換,試求݂f(t)為何?(A) 3݁e-t+5݁e-2t+7e-3t(B)1e-2t+2e-3t+3e-4t(C)3e-t+5e-3t+7e-5t(D)1e-t+2e-3t+3e-5t