With reference to the diagrams giveni in the introduction i for topology 2, the cormponent working probabilities are: PIA0.83, PIB)0,80, PICH0.55, PID)-0.50, What is the system working probability? Your answer: O 0435 O0.869 O 0452 O 0217 O 0,777 O 0681 O 0.824 o 0.526 O0.057 'The RBD' - reliability block diagram In this question you are asked to find the probability that a system of components is working. Each component, A, B, C and D, has the working probability P(A), P(B), P(C) and P(D). The question refers to one of the following four topologies: Topology 1 Topology 3 A C D D Topology 2 Topology 4 A A D B C B