Here are the meanings of some of the symbols that appear in the statements below. . C means "is a subset of." C means "is a proper subset of." Z means "is not a subset of." is the empty set. For each statement, decide if it is true or false. Statement True False X 5 {d, j, k, n} C {d, j, k, n} O O (1, 4} C {1, 2, 3, 4, ...} O O {12, 17, 19} CO O O {p, q, r, s, t, u } 2 {p, r, u} O O