Task: Text Completion
Input (English): Prompt: Following a high-protein diet over a long period of time can cause considerable health problems. It 
Completion A: is therefore recommended that while dieting one should allow himself to eat once a week whatever he desires. 
Completion B: has been proved that this makes the dieter happy. 
Completion C: also helps the person to continue his diet. 
Completion D: must be addressed by a doctor
Output (English): Completion A