4. Lipton Company's operations show the following budgeted costs: Direct materials 3 lbs. per unit of output, at $5.50 per lb. Direct labor $14 per hour, 4 hours per unit Variable overhead $2.80 per direct labor hour Fixed Overhead $210,000 a. Prepare a flexible budget in good form for 4,500,5,000, and 5,500 units.. b. Compute the standard cost for 1 unit (assume 5,000 units is 100% normal capacity). c. Prepare the budget formula based on units. d. For each of the following, compute the total factory overhead cost variance, the variable overhead controllable variance, and the fixed overhead volume variance. (1) The company made 4,750 units, variable overhead was $55,000, and fixed overhead was $210,000. (2) The company made 5,300 units, variable overhead was $58,000, and fixed overhead was $210,000