<human>: Objective: How to replace windscreen wipers on your car?

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Remove the replacements wipers from their container, raise the wipers from the windscreen, then unlock the old wipers and remove them, once removed lock the new wipers in
- Remove the replacements wipers from their container, leave the wipers in their standard position, then unlock one of the old wipers and remove it, lock the new wipers in place
<bot>: Remove the replacements wipers from their container, raise the wipers from the windscreen, then unlock the old wipers and remove them, once removed lock the new wipers in