If 1 persons can do 1 times of a particular work in 1 day, then, 7 persons can do 7 times of that work in
?  Choose the correct choice from the following answers
A) 3 days  B) 1 day  C) 9 days  D) 11 days  E) 15 days
That is, 1 person can do one time of the work in 1 day.   Therefore, 7 persons can do 7 times work in the same 1 day itself.   Option '1 day'
<result>B</result>
If 1 persons can do 1 times of a particular work in 1 day, then, 7 persons can do 7 times of that work in
?