Filter a lookup based on two fields

Hi All,

I have a lookup field A on a quick create form(Y) of a another main form(X) which should be filtered based on the the option set field(B) and a lookup field (C).

B(option set) is coming from user setting and C(lookupfield) coming from main form(X). Both the fields are obviously present in A entity which is lookup on quick create Y

I want to filter this lookup A based on the value in B and C.

Can I get any sample javascript code for it?

Thanks in advance.