Which of the following is NOT a rule that must be followed when naming identifiers?
a) The first character must be one of the letters a-z, A-Z, and underscore or a dollar sign.
b) Identifiers can contain spaces.
c) Uppercase and lowercase characters are distinct.
d) After the first character, you may use the letters a-z, A-Z, the underscore, a dollar sign, or digits 0-9.

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.

On nba 2k 19, every time i try to join a my park game, it leads ro a website telling my dad that he needs ps plus. i already have ps plus though. how do i fix this?

Visualizing a game of “tag” to remember the meaning of contagious