A student is ranked 17th from right and 5th from left. How many students are there in totality ?  Choose the most appropriate option
A) 18	B) 19	C) 20	D) 21	E) 22
From right 17 , From left 5   Total = 17+5-1= 
<gadget id="calculator">17+5-1</gadget>
<output>21</output>
21   ANSWER:21
<result>D</result>
A student is ranked 17th from right and 5th from left. How many students are there in totality ?