A compressor takes in refridgerant at a pressure equal to $23\mathrm{.}8$ psis. The discharge pressure equals $122\mathrm{.}8$ psia. That is the pumping ratio of the compressor at theses conditions. a$)11\mathrm{.}88$:$1$ b$)8\mathrm{.}14$:$1$ c$\mathrm{.}5\mathrm{.}16$:$1$ d$\mathrm{.}6\mathrm{.}15$:$1$