The 2ⁿ vertices of a graph G corresponds to all subsets of a set of size n, for n>=4. Two vertices of G are adjacent if and only if the corresponding sets intersect in exactly two elements.

The 2ⁿ vertices of a graph G corresponds to all subsets of a set of

1.	The 2ⁿ vertices of a graph G corresponds to all subsets of a set of size n, for n>=4. Two vertices of G are adjacent if and only if the corresponding sets intersect in exactly two elements.
A.	n+2
B.	3ⁿ/²
C.	n²
D.	2ⁿ
Answer» C. n²