In a stack of boards at a lumber yard, the 8th board counting from the top of the stack is immediately below the 7th board counting from the bottom of the stack. how many boards are in the stack?	Choose the correct choice from the following answers
A) 18	B) 16	C) 13	D) 34	E) 12
1 2 3 ...   ..............8 7 ................. 1   So the number of boards = 8+5= 
<gadget id="calculator">8+5</gadget>
<output>13</output>
13   Option: 13
<result>C</result>
In a stack of boards at a lumber yard, the 8th board counting from the top of the stack is immediately below the 7th board counting from the bottom of the stack. how many boards are in the stack?