Consider three different processors P$1,$ P$2,$ and P$3$ executing the same instruction set:

P$1$ has a $2\mathrm{.}9$ GHz clock rate and a CPI of $1\mathrm{.}5$

P$2$ has a $2\mathrm{.}5$ GHz clock rate and a CPI of $2\mathrm{.}1$

P$3$ has a $4\mathrm{.}0$ GHz clock rate and a CPI of $2\mathrm{.}2$

Which processor has the highest performance expressed in instructions per second? $\_\_\_\_\_\_\_,$ and what is its performance expressed in instructions per second? $\_\_\_\_\_\_\_$

Group of answer choices

P$1,1\mathrm{.}9$x$10^9$

P$3,1\mathrm{.}8$x$10^9$

P$1,4\mathrm{.}35$x$10^9$

P$2,5\mathrm{.}25$x$10^9$

P$3,8\mathrm{.}8$x$10^9$

P$2,1\mathrm{.}19$x$10^9$