Consider two systems, C and D$.$ System C has three serial components each with reliabilities of $0\mathrm{.}95.$ Two of the components have backups with reliabilities of $0\mathrm{.}90.$ System D has three serial components with reliabilities of $0\mathrm{.}90.$ Each of these components has a backup with a $0\mathrm{.}90$ reliability. What is the reliability of system $C?$

$0\mathrm{.}69$

$0\mathrm{.}86$

$0\mathrm{.}93$

$0\mathrm{.}94$