How to find my application use standard encryption limited within Apple's operating system?

I'm trying to submit an update to our application (Xamarin iOS) into appstore and I'm facing a new prompt related to encryption export compliance.

In our application, we are encrypting and decrypting using the AES and RFC2898 algorithm and we using Http protocol for uploading and downloading the file and StoreKit API for in-app purchase.

For your reference,

In Appstore, we facing a below prombts,

  1. What type of encryption algorithms does your app implement?

Question: In above question, which option do we need to choose?

How to find my application use standard encryption limited within Apple's operating system?
 
 
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