Product groups are eligible for the bid simulator

Q) Product groups are eligible for the bid simulator
Ans:

a) Once a Budget cap has been reached for a product group
b) Once the average cost-per-click(avg.CPC) is close to the maximum cost-per-c) click(max.CPC)
d) Anytime after a product group is created in a shopping campaign
e) When product listing ads have been included in enough auctions or accrued enough impressions