"He struggled up to the surface and tried to cry out, but the wash from the speeding yacht slapped him in the face and the salt water in his open mouth made him gag and strangle. Desperately he struck out with strong strokes after the receding lights of the yacht, but he stopped before he had swum fifty feet. A certain coolheadedness had come to him; it was not the first time he had been in a tight place."   -What does this description reveal about Rainsford?- A. He is an experienced and capable hunter who can track his enemy. B. He is both physically strong and mentally disciplined. C. At his core, he is bloodthirsty and murderous. D. His intelligence and status have served him well.