Google Form Auto Email Setup

I already collect every new Google Form response in its linked Sheet and need a simple layer of automation added.

What I want working end-to-end
1. As soon as someone submits the form the script fires, emails the full response to one fixed address I supply, and immediately sends a short result message back to that respondent. User will pick "A" or "B"
2. There are only two reply templates: one when the submission is “A:Correct”, another when it is “B:Wrong”. You can decide how to flag that status (for example a helper column or formula) as long as I can change the rule later without touching code.
3. I must be able to update the wording of both reply templates myself in seconds—ideally by editing two cells or a dedicated tab inside the same Sheet.
4. No copy-pasting of script on my side: you will enter my Google account (remote session is fine), create and authorise the Google Apps Script, test it live, and leave me with a finished, documented solution.
5. Final check: one test submission reaches my inbox, triggers the correct/wrong branch, and I can alter the template text and see the new wording reflected in the next email.

Please quote the real price. Not a place-holder price.