Look at the chart titled "3 branches of government."

Based on the article, which option best explains why the line from the executive box goes directly to the president symbol but not to the vice president and cabinet symbols?

A. because the vice president and cabinet function to support the president

B. because the president is the only key role of the executive branch

C. because the vice president and cabinet have a role only if the president Is unable to serve

D. because the vice president is part of the cabinet