Assertion `:` Sound waves cannot propagate through vacuum but light waves can.
Reason`:` Sound waves cannot be polarised but light waves can.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but re ason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false
