An electrical appliance will not work unless component QK does. Component QK$\text{'}$s reliability is $0\mathrm{.}95.$ Every other part of the appliance is $100$ percent reliable. What would the reliability of the appliance be if a backup QK were added?

Multiple Choice

$0\mathrm{.}9795$

$0\mathrm{.}9975$

$0\mathrm{.}9205$

$5$ of $5$

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