I have come to believe a great teacher is a great artist and

I have come to believe a great teacher is a great artist and ____
there are as few as there are any other great artists.
A that B what C which D/
句意 come to意思 any other great artists?不是应该单数吗
————salt in many things that don"t taste salty.
A there exists B it exists C it has D there has