What is the definition of quality according to ISO 9000?

A.
Quality is when all features of a service which are agreed with the customer are being delivered
to the customer.

B.
Quality is when the expectations from the customer to a certain service or product are being
delivered to the customer.

C.
Quality is when the requirements and expectations of all stakeholders involved in the product
lifecycle are being fulfilled.

D.
Quality is when the agreed service levels of a specific and defined service are met during
morethen six subsequent periods.