A) Promoters energize frontline employees (Your answer)
B) Promoters sabotage your competition (Correct answer)
C) Promoters accelerate your growth (Your answer)
D) Promoters enhance your reputation (Your answer)
E) Promoters increase your flow of referrals (Your answer)
F) Promoters help reduce your costs (Your answer)
G) Promoters will come to your defense when your brand is unjustly attacked (Your answer)
Explanation: Promoters create a wealth of benefits, often resulting in a virtuous cycle of positive behavior among existing customers, employees, and newly referred customers. But sabotaging the competition is not an expected promoter behavior.
For more information, see "Loyalty economics"