A student is ranked 16th from right and 6th from left. How many students are there in totality ?	Options:
A) 18
B) 19
C) 20
D) 21
E) 22
From right 16 , From left 6   Total = 16+6-1= 
<gadget id="calculator">16+6-1</gadget>
<output>21</output>
21   ANSWER:21
<result>D</result>
A student is ranked 16th from right and 6th from left. How many students are there in totality ?