In the following Venn diagram, the pentagon stands for ‘clerks’, the triangle stands for ‘coffee-lovers’, the square stands for ‘car-owners’

In the following Venn diagram, the pentagon stands for ‘clerks’, the triangle stands for ‘coffee-lovers’, the square stands for ‘car-owners’ and the circle stands for ‘social workers’. The given letters represent the persons in that particular category.

Which of the following categories of persons is represented by the letter ‘D’?

A.            Coffee-lovers who are either car-owners or social workers

B.            Coffee-lovers who are car-owners and social workers also

C.            Car-owners who are coffee-lovers but not social workers

D.            Coffee-lovers who are car-owners, social workers and clerks also