Can someone please explain it to me ASAP?!!! This is velocity and net changes. I need help for the second part. It's starting in 1.25 hours 7794.23 was wrong and what is the correct answer??

Points. A 12,000-liter cistern is empty when water begins flowing into it (at t = 0) at a rate (in L/min) given by Q'(t) = 181t, where t is measured in minutes. a. How much water flows into the cistern in 1.25 hours? b. Find the function that gives the amount of water in the tank at any time t2 0. c. When will the tank be full? .... . a. To find the amount of water that has flowed into the cistern within the given hours, what process is needed? Choose the correct choice below. O A. Find the area under the Q(t) curve between 0 and the given value. O B. Find the area under the Q'(t) curve between the given value and t. C. Find the area under the Q'(t) curve between 0 and the given value. O D. Find the area under the Q(t) curve between the given value and t. In 1.25 hours, 7794.23 liters of water flows into the cistern. (Type an exact answer, using radicals as needed.)