Let $O$ be the center of square $A B C D$. If we randomly select 3 points from $O , A , B , C , D$, the probability that the 3 points are collinear is A. $\frac { 1 } { 5 }$ B. $\frac { 2 } { 5 }$ C. $\frac { 1 } { 2 }$ D. $\frac { 4 } { 5 }$
Let $O$ be the center of square $A B C D$. If we randomly select 3 points from $O , A , B , C , D$, the probability that the 3 points are collinear is
A. $\frac { 1 } { 5 }$
B. $\frac { 2 } { 5 }$
C. $\frac { 1 } { 2 }$
D. $\frac { 4 } { 5 }$