Undefined Variable$1/2$Before using a variable you must assign a value to it$.$ Otherwise, we say the variable is undefined.The code below uses an undefined variable. Submit the provided code and click on the "Expand for Detailed Error Message" dropdown to determine where the Undefined Variable error occurs. Then, make changes to the starter code to resolve the error$\mathrm{.}1$def quadruple$($x: int$)->$ int:$2"""$Return x multiplied by $4\mathrm{.}34>>>$ quadruple$(5)5206"""78$ return x $*$ value