The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER. Which two queries execute successfully?

A. SELECT TO_CHAR(NVL(cust_credit_limit * .15, `Not Available’)) FROM customers;

B. SELECT NVL(cust_credit_limit * .15, `Not Available’) FROM customers;

C. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), `Not Available’) FROM customers;

D. SELECT NVL(TO_CHAR(cust_credit_limit * .15), `Not Available’) FROM customers;

E. SELECT NVL2(cust_credit_limit * .15, `Not Available’) FROM customers;