In a long series of trials, a computer program is found to take on average $23\mathrm{.}7$ seconds of CPU time to execute, with an SD of $1\mathrm{.}23$ seconds. There is no trend or pattern in the times. It will take about $9480$ seconds of CPU time to execute the program $400$ times, give or take seconds or so$.($The CPU is the $$central processing unit,$$ where the machine does logic and arithmetic.$)($A$)0\mathrm{.}003075$ seconds $($B$)0\mathrm{.}0615$ seconds $($C$)1\mathrm{.}23$ seconds $($D$)24\mathrm{.}6$ seconds $($E$)492$ seconds