Price Discrimination Is More Common for Firms Selling Services Than

Price discrimination is more common for firms selling services than for manufacturing firms because:

A) it is easier to prevent arbitrage of a service than of a manufactured product.
B) monopoly is more common in the production of services than in production of manufactured goods.
C) price elasticities of demand differ more among consumers of services than customers of manufactured goods.
D) firms selling services are more likely to have constant marginal cost curves.