Tricking question when I was attended the developer exam last time

Hi All,

Here it is.

New App has been launch in app store with Adobe analytics implemented within the app itself. Developer want to view the number of app lauches after publish

1) s_code out of box

2) mobile sdk lifecycle metrics

3) dtm confirmation

4) App measurement

I believe the answer would be mobile sdk or out of box s_code.

Can someone tell me which one is right?

Thanks,

Arun