​If 3 persons can make 6 dozen strawberry cake in a day and 9 persons can make 18 in a day, is it a direct proportion?

A. Yes, because the situation increases in one quantity and also produces the same result of increase in the other quantity

B. Yes, direct proportion because if the number of persons increases then the number of strawberry cakes also increases

C. Yes, because if the number of persons decreases then the number of strawberry cakes also increases.

D. No, because if you divide the product of the means by 3 is equal to 18