Which element of the business model refers to the presence of substitute products in the market?

Depending on the product, there may be a person who act as a(n) ________ in the buyer center, often by providing specifications for the product being purchased or the vendor being considered.

gatekeeper decider buyer influencer

The author estimates that in January of 2012, Home Depot had a required return on equity of 6.8%. He explains this relatively ________ rate as a reflection of ________

A) low; near all-time low long-term interest rates. B) low; Home Depot's very low beta. C) high; near all-time high long-term interest rates. D) high; Home Depot's very high beta.