A Salesperson Successfully Using the Endless Referral Chain Method of Prospecting

A salesperson successfully using the endless referral chain method of prospecting most likely:

A) never leaves a sales call without at least two referrals.
B) asks customers to set up future appointments with referrals.
C) asks customers to become members of local sales lead clubs.
D) receives customer referrals primarily from orphaned customers.
E) spends time building relationships with customers to get future referrals.