Which of the following are valid c++ assignment statements? assume that i is an int variable, and x and percent are double variables.

a. i - 5 = x;

b. i = i++;

c. x = x * percent / 100;

d. percent = 0.05%;

These statements describe lists in presentation programs: a. bullets can be turned off and on. b. bullets cannot be turned off. c. bullet styles, colors, and sizes can be changed. d. lists don't have to use bullets or numbers. e. numbering styles, colors, and sizes can be changed. f. numbers can be turned off and on. g. numbers cannot be turned off. select all that apply