______ (为了实现成为职业运动员的梦想), Tom kept training for 3 years.

A．The recruiting letters Mack Reiter received offered him full scholarships.
B．Mack Reiter wanted to help his family go out of the trouble.
C．Traditional scholarships are a good solution to the tuition problems in some families.
D．Mack Reiter was very proud of his national wrestling championship.