How much of the roller coaster's kinetic and/or potential energy is at the following points? (pick one option for each point) point a: a. 100 potential energy b. 1/2 of its potential energy c. 3/4 of its potential energy point c: a. 100 kinetic b. 1/2 potential, 1/2 kinetic c. 1/4 potential, 3/4 kinetic point d: a. 100 potential b. 3/4 potential, 1/4 kinetic c. 1/2 potential, 1/2 kinetic