You have $120$ minutes to complete this exam.

The CSCE $101$ Final exam is an open$-$book $/$ open$-$note $/$ open internet exam but closed$-$collaboration $/$ closed$-$social media.

Consulting anyone is prohibited. Which variable can be used in place of XXX in the following code?

def fahrenheit$\_$to$\_$celsius$($f$)$:

fraction $=5/9$

c $=($f $-32)*$ fraction

return c

degrees $=$ float$($input$(\text{'}$Enter degrees in Fahrenheit: $\text{'}))$

print$($fahrenheit$\_$to$\_$celsius$($XXX$))$