A system is designed to operate for 100days. the system consists of four components in series. Their failure distributions are (1) weibull with shape parameter 1.2 and scale parameter 840days (2) longnormal with shape parameter (s) 0.7 and median 435 days; (3) constant failure rate of 0.0001. (a) compute the system reliability . (B) if two units of compenents 1,2, and 3 are available. determine the high -level and low level redundancy reliability. assume the components 1,2 and 3 can be configured as a subassembly (C) if two units of components 1 and 2 are available, determine the low-level redundancy reliability.