determine which of the following scenario depict a one to one situation.

1. The LRN (learner's reference number ) of every filipino student.

a. one to one function
b. Not one to one function

2. Each family and its member are represented by their surname

a. one to one function
b. not one to one function

3.The fingerprint of every people in the world

a. one to one function
b. not one to one function

4.The blood type of people

a. one to one function
b. not one to one function

5. The cities and towns in the Philippines have a designated zip code

a. one to one function
b. not one to one function ​​