Lorrie Vernon, Owner of All That Swag, Used Discount Coupons

Lorrie Vernon, owner of All That Swag, used discount coupons for special event items to drive customers to her retail stores.Using such promotions and stating that "the regular price is never chiselled in stone" would indicate Lorrie is using a:

A) variable pricing strategy.
B) price lining strategy.
C) skimming pricing strategy.
D) product line pricing strategy.