Using the Following Answer Code, Indicate Which Pressure Relationship Exists

Short Answer

Using the following answer code, indicate which pressure relationship exists during the time in question.
a.aortic pressure > ventricular pressure > atrial pressure
b.aortic pressure > ventricular pressure < atrial pressure
c.aortic pressure < ventricular pressure > atrial pressure
d.aortic pressure < ventricular pressure < atrial pressure
-When the atrioventricular valve opens