A student is ranked 16th from right and 6th from left. How many students are there in totality ? Choose the correct choice from the following choices:	A) 18	B) 19	C) 20	D) 21	E) 22

Rationale: "from right 16 , from left 6 total = 16 + 6 - 1 = 21 answer : d"
Answer: D