What action do you need to take before you can create a delivery document for this sales quotation?

You created sales quotations for three leads. One of the quotations was accepted with the condition that delivery be made today.

What action do you need to take before you can create a delivery document for this sales quotation?
A . Copy the sales quotation to a sales order
B . Convert Qle lead to a customer
C . Change the status of the sales quotation
D . Perform an availability check

Answer: B