When creating a calculate field, existing field names must be enclosed in brackets

Which of the following are common objects and functions used by a language that developers can access and reuse without recreating them?

A. standard libraries B. language depositories C. secure code lockers D. open source frameworks

CRC stands for __________.

a. Class, Recyclability, Collaborations b. Class, Redundancy, Collections c. Class, Responsibilities, Collaborations d. Code, Reuse, Constancy