A formal service quality evaluation process:

A) measures the gap between service expectations and performance perceptions.
B) is relatively simple and applicable for all types of services.
C) is performed exactly the same as it is for goods.
D) is impossible to quantify if the service is highly intangible.
E) is most easily done on the buyer's premises.

A formal service quality evaluation process measures the gap between service expectations and performance perceptions. This is the most accurate way to evaluate service quality, as it takes into account the customer's perceptions and expectations. It is not a simple process and requires specific measurements and tools, and it may not be applicable for all types of services. While it is possible to quantify service quality even for highly intangible services, it may be more challenging. The evaluation process can be done on the buyer's premises, but it can also be done off-site.