что воткнуть? Megan used (think) that a library was a

что воткнуть? Megan used (think) that a library was a place where books were (buy) and (sell); now she knows that a library is a place for (lend) and (borrow) books.
А) think, bought and sold, lending, borrowing;
Б) to think, bot and sold, lending, borrowing;
В) think, bout and sold, lending, borowing;
Г) to think, bought and sold, lending, borrowing.