The correct option is A Penicillium camemberti
The Certain fungal population is known as cheese moulds play an important role in the ripening of cheese. They give the cheese a characteristic texture and flavour. The important kinds of mould refined cheese are - Camembert and Brie type and Roque fort gorgonzola and stilton type. These moulds concerned are Penicillium camemberti for the first type and Penicillium roquefortii for the second type. Thus, the correct answer is option A.