Alex owns $60\%$ of A Corporation, $55\%$ of B Corporation and $40\%$ of C Corporation. Which of the following best describes the relationship between A$,$ B$,$ and C$?$

Group of answer choices

A and B are a $50\%$ brother$-$sister control group.

A$,$ B$,$ and C are a parent subsidiary control group.

A$,$ B$,$ and C are a combined control group.

A and B are a parent$-$subsidiary control group.

A$,$ B$,$ and C are a $50\%$ brother$-$sister control group.