An elderly man with aortic stenosis is assessed. Which one of the following would make the ejection systolic murmur quieter.. Left ventricular systolic dysfunction

An elderly man with aortic stenosis is assessed. Which one of the following would make the ejection systolic murmur quieter?
A.A Left ventricular systolic dysfunction***
B.A Thyrotoxicosis
C.A Mixed aortic valve disease
D.A Expiration
E.A Anaemia.