на витрине40 пирожных.Каждому из 7 покупателей продали по 4 пирожных.Сколько пирожных остались на витрине ?

Special offer! 

If you use the swimming pool ten minutes in one month, you can attend one Water fitness Class free of charge.

What does it say?

A. The water fitness classes are free to who swim ten times in a month.

B. The swimming pool is free for peoople who go to the Water Fitness Classes.

C. This months you can go to Water Fitness Classes and use the swimming pool ten times without paying.