In The Law of Life, Old Koskoosh's son, the tribe chief, came to say good-bye, and briefly explained the situation the tribe was facing. He mentioned some factors that forced him to abandon the sickly old man. Which factor was NOT mentioned?
A.
The tribesmen had to travel long and fast.
B.
The tribesmen had to start hunting for meat immediately.
C.
Some tribesmen showed unwillingness to take the old man.
D.
The loads on the dog sleds were already heavy.