单项选择题
Mr John has paid much attention to his weight reduction programs. Just last year, for example, when he was the main speaker at the company dinner, he said he had put on 30 pounds instead of losing the forty he had promised he would.
The year before that, he joined a health club. He exercised every day and ate less food. After three months however be began making excuses about why he couldn’t go there more often.
As the health club failed to work, he joined Weight Watchers but stopped going because he was the only man there. And he hates following any of the diet programs. John’s latest action is to join a walking club to "walk off" the weight.
A. he goes back to the health club
B. he stops worrying too much
C. he sticks to a program long enough
D. he makes good excuses for his purposes