Which of the Following Is an Advantage of Using Chemical

Which of the following is an advantage of using chemical hormones as messengers rather than electrical signals to control body organs?

A) Different hormones can be targeted at different tissues because they are all chemically different.
B) Chemical signals can persist longer.
C) Chemical signals can spread to all tissues via the blood.
D) Chemical signals are usually only required in only small amounts.
E) All of the choices are correct.