Answer:
B. Add customers to Sales force as Chatter Free users
D. Invite customers into private chatter groups
Explanation:
Since the customers are required in each and every step of sales, and that the customer satisfaction is the key to validate the transaction and sales procedure.
The steps to include them in the sales itself would be a great initiative and that there should be some personal meeting also by inviting them to the private chatter groups so that there suggestions can be attended properly.
Accordingly option B and option D are correct.
