When the preprocessor finds the #define directive ... it sets up a conditional compilation. it replaces the first occurrence of the identifier in the code with the replacement text. it stops the compilation process. it replaces any occurrence of the identifier text in the code with the replacement text. Which statement is true. The compiler compiles the code and resolves all directives after the code is generated by regular statements. Preprocessor directives are not used in defining macros. The preprocessor examines the code before the compilation of code begins and resolves all directives before any code is generated by regular statements. Preprocessor directives must end with a semi-colon. Unit testing ... is the same as regression testing. should always be done, even if nothing has changed. O means writing code that verifies individual parts, or units, of an application or library. is not part of test-driven development (TDD). Conditional inclusion directives include which of the following (select all that apply): #ifdef #ifndef #if, #else, #elif #exit O None of the above