Which of the Following Statements Describes Abstraction, in Its Sense

Multiple Choice

Which of the following statements describes abstraction, in its sense as a counting principle?

A) Any set of objects or events can be counted.
B) Objects can be counted left to right, right to left, or in any order.
C) The number of objects in a set corresponds to the last number counted.
D) Each object must be labeled by a single number
word.