The buyer-seller relationship has changed dramatically in the past 20 years. This is PRIMARILY because:
A) Buyers have so many distractions that they need more frequent contact to help them through the buying process.
B) Buyers spend less time at home, making door-to-door sales and cold calling less effective.
C) The internet has shifted the power in the buying process from the seller to the buyer.
D) Economic changes have made buyers more cautious.