C i think hope you get it right :)
Answer:
positive
Explanation:
For example, if there are only fixed costs associated with producing goods, the marginal cost of production is zero. If the fixed costs were to double, the marginal cost of production is still zero. The change in the total cost is always equal to zero when there are no variable costs.
<em>WHILE</em><em> </em><em> </em><em>I</em><em> </em><em> </em><em>WAS</em><em> </em><em>WASHING</em><em> </em><em>CLOTHES</em><em>, </em><em> </em><em>THE</em><em> </em><em> </em><em>TELEPHONE</em><em> </em><em>RANG</em><em> </em>
Frankenstein doesn't admit he is the murderer because he was away at college when the murder was happening.