Which of the Following Statements About the History of Linguistics

Which of the following statements about the history of linguistics is incorrect?

A) The discovery of system,regularity,and relationships in linguistic data occurred in the 17th century.
B) The modern scientific study of language began in the 17th century with the accumulation of facts about the languages spoken by people encountered during the Age of Exploration.
C) In the 19th century,laws and principles of language were formulated.
D) Many theories of language have been developed in the 20th century.
E) Linguistics is the modern scientific study of all aspects of language.