Two Students Rated, Then Ranked Six Different Television Shows

Two students rated, then ranked six different television shows. The final rankings are listed in the table below. Compute the Spearman rank correlation coefficient r_s for their rankings.
Show
A
B
C
D
E
F
Student 1
1
6
3
4
2
5
Student 2
3
6
1
5
4
2

A) 0.371
B) 0.628
C) 0.714
D) 0.886