The answer would be 3.instance methods of a class may call only using DOT
Good things:
It is a solid material,NOT plated which makes it easily engravable.
does not tarnish or
discolor easily
Bad things:
It is not a high quality metal
It will melt at low temperatures,so do not get it around extreme heat.
It can damage easy if exposed to acids like lemon juice or vinager
D) All of the above are corect