David, Ping, Mandy, and Alan are each studying one of the animals shown in the table for a science project.Animal Study ProjectAnimalSpeedTypeHabitatElephant25 mph (running)MammalGrasslandsSailfish68 mph (swimming)FishOceansGiraffe32 mph (running)MammalGrasslandsDolphin30 mph (swimming)MammalOceansSource: www.worldalmanacforkids.comDavid is studying a mammal, but Ping is not. The animal that Mandy is studying can be found in the ocean. The animal that Alan is studying is slower than the animal that David is studying.Which animal is David studying?a.Dolphinb.Elephantc.Sailfishd.Giraffe