One Method of Implementing a Tree Using an Array Involves

One method of implementing a tree using an array involves storing the child of the element at the index n in the array at indexes ______________________________ .

A) n+1 and n+2
B) 2ⁿ and 2²ⁿ
C) 2n+1 and 2n+2
D) n-1 and n-2
E) none of the above will work