How to switch between 3 analog values

Hi, 

I'm currently working on a Logo8 with 3 analog inputs (4..20mA) via 2 AM modules and 1 analog output. 

The system should switch the analog input to the output depending on 3 digital inputs:

I1 high --> analog output = Analog input 1

I4 high --> analog output = Analog input 2

I3 high --> analog output = Analog input 3 

What is the best option to work with this? 

Thank you in advance for any help you can give.