Here are the steps you should follow to create and update/set the IPsec/IKE policy on a site-to- site VPN connection.

Option A is correct. The given sequence is the proper sequence of steps to be followed to create and update/set the IPsec/IKE policy on a site-to-site VPN connection.
Option B is incorrect. The given sequence is not correct.
Option C is incorrect. With the given sequence of steps, you can't create or set the IPsec/IKE policy on a site-to-site VPN connection.
Option D is incorrect. The given sequence is not correct.
Option E is incorrect. The given sequence is not correct.
Reference:
https://docs.microsoft.com/en-us/azure-stack/user/azure-stack-vpn-s2s