Which of the following statements is false?
A、There are no sub-types of definitions because they are too specific to a given field of knowledge or study.
B、A term may have many different senses and multiple meanings, and thus require multiple definitions.
C、A sentence is composed of words grouped into phrases and clauses.
D、In modern usage, a definition is something, typically expressed in words, that attaches a meaning to a word or group of words.