In a stack of boards at a lumber yard, the 20th board counting from the top of the stack is immediately below the 19th board counting from the bottom of the stack. How many boards are in the stack?	Options:
A) 37 B) 36 C) 35 D) 34 E) 32
Counting from the top, after the 20th board, there are 17 boards left to count.   The answer is 37.
<result>A</result>
In a stack of boards at a lumber yard, the 20th board counting from the top of the stack is immediately below the 19th board counting from the bottom of the stack. How many boards are in the stack?