In a row of trees, one tree is fifth from either end of the row. How many trees are there in the row

In a row of trees, one tree is fifth from either end of the row. How many trees are there in the row ?

A. 8

B. 9

C. 10

D. 11

Answer: B . 9

Justification: Clearly, number of trees in the row = ( 4 + 1 + 4 ) = 9.