What is the clock rate of a computing unit with a cook period of $5ns$ and what is the firne required for pertorming an ADO instruction with CPI of $2$ weh this computing unin?

a$.02GHz,1ns$

b$.2CH,1ne$

c$.0\mathrm{.}2GHz,10ns$

d$.0\mathrm{.}4GH2,100ns$