Graphene is often in the headlines these days. What is its importance? 1. It is a two-dimensional material and has excellent electrical conductivity. 2. They are among the thinnest but most powerful substances ever tested. 3. It is completely made of silicon and has high visual transparency. 4. It can be used as 'conductor electrode' for touch screen and organic. Which of the above statements are correct?

Graphene is often in the headlines these days. What is its importance?

1.	Graphene is often in the headlines these days. What is its importance? 1. It is a two-dimensional material and has excellent electrical conductivity. 2. They are among the thinnest but most powerful substances ever tested. 3. It is completely made of silicon and has high visual transparency. 4. It can be used as 'conductor electrode' for touch screen and organic. Which of the above statements are correct?
A.	1 and 2
B.	3 and 4
C.	1,2 and 4
D.	all these
Answer» D. all these