many third party grocery/food delivery services such as shipt, uber eats, grubhub, and others offer free trials or largely discounted pricing to attract new customers. when developing overall revenue and profitability projections, these companies are most likely to: a. face issues related to identifying and maintaining reliable and cost-effective supply chains. b. experience difficulty in meeting financial investor's desire for higher stock valuation. c. experience hurdles in shipping products to customers in a timely manner. d. experience difficulty in determining how many trial users will become monthly subscribers. e. face regulatory challenges from local, state, and federal regulators over pricing strategies