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

Multiple Choice

$9975$

$95$

$9205$

$\mathrm{.}9795$