Properly Validated and Professionally Developed Testing Programs Include

Properly validated and professionally developed testing programs include:

A) Either developing an in-house test with the assistance of an outside company or the use of tests developed by outside consulting firms.
B) Only those tests developed by consulting firms because of their broad usage base making validation inexpensive.
C) Uniform testing only because,as testing specialists and managers agree,there are too many variable requirements.
D) Eliminating the need for proof of the test's validity.
E) None of these because this type of testing is illegal.