$6.$ Margarita also wants to show the average, maximum, and minimum revenue amounts per department and for all departments. Calculate these statistics in the range J$5$:L$9$ by entering formulas as follows:

a$.$ In cell J$5,$ enter a formula using the AVERAGE function to average the quarterly revenue from the General Medicine Department $($range C$5$:F$5).$ Copy the formula without formatting from cell J$5$ to the range J$6$:J$9.$

b$.$ In cell K$5,$ enter a formula using the MAX function to find the maximum quarterly revenue from the General Medicine Department $($range C$5$:F$5).$ Copy the formula without formatting from cell K$5$ to the range K$6$:K$9.$

c$.$ In cell L$5,$ enter a formula using the MIN function to find the minimum quarterly revenue from the General Medicine Department $($range C$5$:F$5).$ Copy the formula without formatting from cell L$5$ to the range L$6$:L$9.$