The demand for a product is likely to be more elastic: a. when the market for a product is less narrowly defined. b. when a product has fewer substitutes availablewhen a product has fewer substitutes available. c. the more time that passesthe more time that passes. d. when the cost of a product represents a smaller share of the consumer's budgetwhen the cost of a product represents a smaller share of the consumer's budget. e. both a and b.