The mountain shrimp at the bottom are eaten by the bleak above them, the bleak are eaten by the perch above them, the perch are eaten by the northern pike above them, and the northern pike are eaten by the osprey. Which of these would cause the GREATEST reduction in the number of fish in the lake available for human consumption? A) elimination of the bleak B) elimination of the osprey C) elimination of the northern pike D) elimination of the mountain shrimp