Bao has been notified by his electric company that his rates are going up on his graduated fee schedule. He currently pays:Standard Use Plan6.5 cents/kWh for the first 600 kWh12 cents/kWh for the next 600 kWhIf his rates go up 1 cent in each category, find how much he will pay if he uses 875 kWh per month. Round to the nearest dollar.a.$72b.$105c.$66d.$81