Suppose EEL $4768($section $3)$ students are involved in designing next generation processor. They made the following measurements about the existing architecture.

Frequency of FP operations $=25\%$

Average CPI of FP operations $=4\mathrm{.}0$

Average CPI of other instructions $=1\mathrm{.}33$

Frequency of FSQRT $=2\%$

CPI of FSQRT $=20$

Assume that there are two design enhancement options.

Decrease the CPI of FSQRT to $2$

Decrease the average CPI of all FP operations to $2\mathrm{.}5.$

Which option students should pick?

Hint: Compare these two design enhancement options using the processor performance equation.