The Covid$-19$ testing center has a computer which has three modules necessary to work so they can test samples. In order for the computer to function properly, all three modules must function. Two of the modules have reliability's of $\mathrm{.}97,$ and the other has a reliability of $\mathrm{.}99.$ P$($component works$)+[$P$($component does not work$)$ x P$($switch works$)$ x P$($ backup component works $)]$ If the backup computer must be activated by a switch in the event that the first computer fails and the switch has a reliability of $\mathrm{.}98,$ what is the overall reliability of the system $?$ NOTE: Both the switch and the backup computer must function in order for the backup to take over. O$\mathrm{.}989\mathrm{.}992$ O$\mathrm{.}994$ O$\mathrm{.}990$ not enough date given to answer