To answer this question, you need to understand the function of a DB2 pre-compiler. Let's go through each option to understand why it is correct or incorrect:
Option A) Removes all the statements in source code - This option is incorrect because the DB2 pre-compiler does not remove all the statements in the source code. Rather, it processes the source code and performs certain transformations.
Option B) Replaces all the SQL statements into corresponding host language CALL statements - This option is correct. The function of a DB2 pre-compiler is to process the source code and replace all the SQL statements with corresponding host language CALL statements. This allows the SQL statements to be executed by the DB2 database.
Option C) Replaces SQL statements into corresponding host language statements - This option is incorrect because the DB2 pre-compiler does not replace the SQL statements with corresponding host language statements. It specifically replaces them with CALL statements.
Option D) None of the above - This option is incorrect because option B is the correct answer. The DB2 pre-compiler does replace SQL statements with corresponding host language CALL statements.
The correct answer is B. This option is correct because the function of the DB2 pre-compiler is to replace all the SQL statements in the source code with corresponding host language CALL statements.