Suppose that a system consists of two subsystems A and B in series and subsystem B consists of two components C and D in parallel.If failure probabilities are as follows: P(A) = 0.05, P(C) = 0.15, and P(D) = 0.20, do the following:

a.Draw a fault tree for the mission failure

b.Calculate the probability of the top event T

c.Calculate the cut set importances