4 men work 12 hours daily to complete a work in 9 days. If 16 men work 2 hours daily, in how many days will the work be complete?

 4 men work 12 hours daily to complete a work in 9 days. If 16 men work 2 hours daily, in how many days will the work be complete?

A). 9 1/2 days

B). 11 1/2 days

C). 13 1/2 days

D). 15 1/2 days

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