Arrange the following in order of their first appearance.

A. Sears' List of Subject Headings
B. Medical Subject Heading
C. Library of Congress Subject Headings
D. The Merriam Webster Thesaurus
Choose the correct answer from the options given below:

A

A, B, C, D

B

B, C, D, A

C

D, C, B, A

D

D, C, A, B