Objective: How to change engine oil.

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

Choices:
(a). Jack up the car 12 inches just so you can get under. Grab a pan to catch the oil in. First unscrew oil filter let oil drip out. Unscrew the oil pan plug screw. Leave some dirty oil in the car for lubrication. Put back on old oil filter and oil drain plug. Put recommend oil in car. Put car on the ground and don't start the car for 15 minutes. Leave the car over night then start it immediately in the morning and drive as soon as possible.;
(b). First jack the car up so its safe enough to get under. Grab a pan to catch the oil in. Next, find the bolt to the oil pan and unscrew it carefully. Let the oil drip out. Locate the oil filter and carefully unscrew it. Let all the oil drip out. Clean screw with rag. Put oil screw back on oil pan and install a new oil filter. Put recommended amount of oil in car. Double check dipstick and put car back on the ground. Let motor run for 15 minutes until warm.;
(b).