This is a question with answer options. Goal: How can I play slide guitar without an actual slide?

Which of the following methods is more reasonable for accomplishing this goal?

pick from the following. (I). Take a beer bottle or other rounded glass or metal instrument and slide on strings of guitar, as you fret with your other hand.; (II). Take a Evian bottle or other rounded glass or metal instrument and slide on strings of guitar, as you fret with your other hand.;...I think the answer is
(I).