Which describes a benefit from government regulation of a natural monopoly

More than an answer this is an extra to write the possible answers of the question, so if someone knows please say:

A) after flooding destroys homes in a small town, rent goes up.

B) Livy's gas utility bill doesn't go up during a natural gas shirtage

C) the corn syrup in Marcu's candy was cheaper to use than sugar

D) two lumber suppliers compete to offer the best price for paper mills

Explanation:

odd consecutive integers are odd integers that follow each other. they have a difference of 2 between every two numbers. if n is an odd integer, then n, n+2, n+4 and n+6 will be odd consecutive integers. the first number in the pattern is always the variable on its own or in this case, "n". examples.

answer; /// blank(1); increases; blank(2); decreases;