Which of These Statements Describes the Closure of the Valves

Which of these statements describes the closure of the valves in a normal cardiac cycle?

A) The pulmonic valve closes slightly before the aortic valve.
B) The aortic valve closes slightly before the tricuspid valve.
C) Both the tricuspid and pulmonic valves close at the same time.
D) The tricuspid valve closes slightly later than the mitral valve.