Subject-verb agreement can be complex when dealing with collective nouns, proximity principles, and specific quantifiers. Analyze the statements below.

I.In the sentence "Neither the director nor the actors __ aware of the change," the verb should be "were" following the principle of proximity.
II.The phrase "A number of problems" takes a singular verb, whereas "The number of problems" takes a plural verb.
III.The noun "criteria" is plural and requires a plural verb, while "criterion" is the singular form.

Choose the alternative that indicates the correct statement(s).