Multiple HTTP.Redirect Options with Azure Function?

i'm new to programming and therefore need some help developing an Azure Function and hope you can help me.

What needs to happen in the Azure Function is that i have multiple URLs i want to be able to redirect to, depending on the input I give to the Function. There will be more than 100 options i need to add. But for the question it's enough if i make an example with 5 options.

For Example:

1. Input "A" = Redirect to LinkedIn,
2. Input "B" = Redirect to Xing,
3. Input "C" = Redirect to Power Automate,
4. Input "D" = Rdirect to Power Apps,
5. Input "null" = Redirect to Google,

I tried a few things out but didn't have any success sadly.

My two questions would be:

1. Is it possible to do something like that with a single Azure Function?
2. How could an example code of this Program look like?

Thanks in Advance