A dairy needs 296 gallons of milk containing 6% butterfat. How many gallons each of milk containing 9% butterfat and milk containing 1% butterfat must be used to obtain the desired 296 gallons? Option 1: 100 gallons of 9% butterfat milk and 196 gallons of 1% butterfat milk. Option 2: 200 gallons of 9% butterfat milk and 96 gallons of 1% butterfat milk. Option 3: 50 gallons of 9% butterfat milk and 246 gallons of 1% butterfat milk. Option 4: 150 gallons of 9% butterfat milk and 146 gallons of 1% butterfat milk.