We have . . . . . . . . black and white television.

The correct answer is: A. a

The word "a" is used before singular nouns that are not specific. In this case, the noun is "black and white television." This is a general reference to any black and white television, not a specific one. Therefore, we would use the indefinite article "a."

The word "an" is used before singular nouns that begin with a vowel sound. In this case, the noun "black and white television" does not begin with a vowel sound, so we would not use "an."

The word "the" is used before singular nouns that are specific. In this case, the noun is "black and white television." This is not a specific reference to any black and white television, so we would not use "the."

The word "none of these" is not the correct answer because it is not a noun.