Which of the following BEST describes a Test Case?

Which of the following BEST describes a Test Case?
A . A statement about “what to test” in terms of measurable coverage criteria from analysis of the test basis.
B . A set of preconditions, inputs, actions, expected results and postconditions developed based on test conditions.
C . A description of the test objectives to be achieved and the means and the schedule for achieving them.
D . A source to determine expected results to compare with the actual result of the system under test.

Answer: B