A simple electronic assembly consists of two components in a series configuration with reliabilities as shown in the figure below.

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Engineers would like to increase the reliability by adding additional components in one of the two proposed designs shown in the figure below $($notice the difference in the diagram design with respect to being in series and parallel$)$:

Design Option B

a$.$ Find the reliability of the original design. Round your answer to four decimal places.

b$.$ Explain how the configurations of the proposed designs differ.

$-$Select$-$ places two components in series and duplicates this two$-$component series in a parallel and redundant configuration.

$$ places two redundant components in parallel and once they are collapsed we have composite reliabilities in a series configuration.

C$.$ Find the reliabilities of Options B and C$.$ Round your answers to six decimal places.

Realibility $($Design Option B$)$:

Realibility $($Design Option C$)$:

Which proposed design has the best reliability?