Great News! You're on the Phone with the Operations Manager

Great news! You're on the phone with the operations manager of a group of five office parks in the Pacific Northwest, and she's telling you that you've been awarded the contract to become their new paint supplier. She asks, "Where do we go from here?" How do you respond?

A) Working with her and the maintenance manager to determine what their needs are.
B) Thanking her for the business and letting her know you're available to her anytime.
C) Sending her a list of current clients and offering to provide references.
D) Introducing her to your company's online ordering system and asking if this will work for her.