4. Gas is being pumped into your car's gas tank at a rate of r(t) gallons per minute, where t is the time in minutes. What does the expression represent in context to the scenario? ∫²₁ r (t) dt = 3.5
O The gas in the tank increased by 3.5 gallons during the second minute. O The rate of the gasoline increased by 3.5 gallons per minute between 1 and 2 minutes O The car is being filled with an additional 3.5 gallons of gas every minute O There were 3.5 gallons of gas in the tank by the end of 2 minutes