Marketing Services Is More Challenging Than Marketing Goods Because

Marketing services is more challenging than marketing goods because:

A) of the unique characteristics of services,which includes intangibility,inseparability,heterogeneity,and perishability.
B) consumers and business users can easily evaluate the quality of services.
C) services tend to exhibit less experience and credence qualities.
D) all service providers compete against each other,but firms selling tangible goods complement each other.