An effect of government regulation of natural monopolies is to Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Allow monopolies to exist b....

Extracted text: An effect of government regulation of natural monopolies is to Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Allow monopolies to exist b. Allow monopolies the exist when they can only produce at higher costs Allow monopolies to exist when they can produce at lower costs than the total industry costs of several smaller firms d Not allow monopolies to exist because they always produce at higher costs