Utility is:

Utility is:

A.the extent to which the user's needs are met when a correct product is usedunder conditions permitted by its specifications.

B.a measure of the frequency and criticality of product failure.

C.a function of the range of conditions under which it will operate.

D.the extent to which the product meets its constraints with regard toresponse time or space requirements.

E.the extent to which the product satisfies its output specifications,independent of computing resources, when operated under permitted conditions.

正确答案是A