In the following diagram, the hexagon stands for 'boys', the rectangle stands for 'sportspersons', and the triangle stands for 'musicians'. The letters given in the different segments represent persons belonging to that category.

Which category is represented by the letter 'f'?

A

Musicians who are boys and sportspersons both

B

Boys who are musicians but not sportspersons

C

Boys who are sportspersons but not musicians

D

Sportspersons who are musicians but not boys