IQ$2)$ Given the following FIFO rules, how deep does the FIFO need to be to prevent underflow or overflow'?

RULES:

frequency$($clk$\_$A$)=$ frequency$($clk B$)\frac{?}{4}$

period en$\_$B$)=$ period $($clk$\_$A$)*100$ worntr

duty$\_$cycle$($en$\_$B$)=25\%$