If 6 persons can do 6 times of a particular work in 6 days, then, 7 persons can do 7 times of that work in? Choose the correct choice:
A) 3 days	B) 4 days	C) 6 days	D) 7 days	E) 8 days
That is, 1 person can do one time of the work in 6 days.   Therefore, 7 persons can do 7 times work in the same 6 days itself   6 days)
<result>C</result>
If 6 persons can do 6 times of a particular work in 6 days, then, 7 persons can do 7 times of that work in?