Which of the following diagrams indicates the best relation between Mercury, Zinc and Metal?

Hospital consists of nurse and patient but nurse and patient are of two different nature.

All the three are different from each other.

All the three are different from each other.

Bulb and Lamp are different from each other but light is obtained from both.

Some questions are asked in examination and some in practice but examination and practice are different from each other.

A teacher may or may not be a writer and musician. Similarly a musician may or may not be a teacher and writer and so a writer may or may not be a teacher and musician.

Chairs and tables both are furniture but no chair is table.

Tiger is carnivorous but Elephant is different from these two.