Use the thesaurus entry for abstract to answer the question.
abstract
noun
Definition: a summary of points in brief form
Synonyms: summary, brief, digest, synopsis
verb
Definition: to make a summary of
Synonyms: summarize, outline
adjective
Definition: expressing a quality apart from an object, without a direct representation
Synonyms: theoretical, conceptual, nonrepresentational, ideal

Which is a possible synonym for the word abstract as it is used in this sentence?

The medical students were asked to abstract the information in the related case studies.

A. synopsis
B. summarize
C. ideal
D. conceptual