four components A$,$B$,$C and D are placed in series to make a subassembly in a circuit board,the reliabilities of A$,$B$,$C and D are $093,0\mathrm{.}88,0\mathrm{.}95$ and $0\mathrm{.}92$ respectively $.$ find the reliability of the subassembly. what will be the reliability if all four components are placed in parallel? analyze which is the most appropriate configuration $,$wether series or parallel, in this case and justiyfy your reasoning.