Suppose Jeff is responsible for operating costs at a gas station. The planning budget for the month of October called for revenue of $100,000 and the following costs: . Fuel costs, $50,000 Labor costs, $10,000 Administrative costs, $20,000. Actual revenue for October was $75,000 and costs were as follows: . Fuel costs, $40,000 Labor costs, $10,000 Administrative costs, $18,000. 1. What are the variances for each cost? 2. Do you think Jeff has done a good job managing operating costs?