The correct answer is A) $4000.
The Groundskeeper says he will make 3 suits for $4000.
We are talking about scene 12, where it appears Bolsa, Sancho, and Groundskeeper. Sancho dials the phone number (205) 748-6391 to speak to the groundskeeper to ask him to sell him a suit. After asking for the costs, the groundskeeper tells Sancho that he has a blue used suit for $1000, but he can sell 3 suits for $4000.