Use the following table to answer the question below.

Jorge's Production Possibility Schedule

$\backslash$table$[[$Pounds of Green Beans,Pounds of Corn$],[0,320],[20,240],[40,160],[60,80],[80,0],[,]]$

Jorge's opportunity cost of producing $1$ pound of corn is $$ pound$($s$)$ of green beans.

$1$

$2$

$4$

$\frac{1}{4}$