Which mapping shows the function represented by these ordered pairs? (4, 5), (8, 5), (1, 3), (6, 4)

As in the question, the options for functions are not shown, I am solving the correct function representation of the ordered pairs: (4, 5), (8, 5), (1, 3), (6, 4) as is represented in the picture.

Note:A function is a relation in which no two ordered pairs have the same first coordinate i.e. x - value is same however, the y-value can be same.  Thus, this function is also a relation. 

They are somewhat similar