Which of the following Statements about macros is true? (select all that apply)

Which of the following Statements about macros is true? (select all that apply)
A . Arguments are defined at execution time.
B . Arguments are defined when the macro is created.
C . Argument values are used to resolve the search string at execution time.
D . Argument values are used to resolve the search string when the macro is created.

Answer: B,C