Five persons are standing in a queue. One of the two person at the extreme end is a professor and the other is a businessman. An advocate is standing to the right of the student. An author is to the left of the businessman. The student is standing between the professor and the advocate. Counting from the left the author is at which place:

A

$$1^{st}$$

B

$$2^{nd}$$

C

$$3^{rd}$$

D

$$4^{th}$$