All the following are steps in identifying your next $10$ customers, except:

Select one:

a$.$

go back and modify your earlier assumptions

b$.$

If your customer validates your hypotheses from the previous steps, now is a good time to ask the customer if they would consider providing a letter of intent to buy your solution.

c$.$

Contact each of the potential customers on your list and present your Full Life Cycle Use Case.

d$.$

Start building your prototype