View the exhibit and examine the description of the PRODUCT_INFORMATION table.
Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?
A.
SELECT COUNT (DISTINCT list_price)
FROM product_information
WHERE list_price is NULL
B.
SELECT COUNT (NVL(list_price, 0))
FROM product_information
WHERE list_price is NULL
C.
SELECT COUNT (list_price)
FROM product_information
WHERE list_price i= NULL
D.
SELECT COUNT (list_price)
FROM product_information
WHERE list_price is NULL