When a Property Has More Than One Mortgage, the Priority

When a property has more than one mortgage, the priority of those mortgages will be determined by which of the following?

A) the date each mortgage document was signed
B) the mortgage with the higher principal amount comes first
C) the date each mortgage was registered
D) the type of mortgage that has been given, conventional mortgages taking priority over vendor take-back mortgages and the like
E) the date each mortgage was notarized