如果QUANTITY的值为空值(null)，在执行以下哪个语句时会显示一个0

A．SELECT id_number, 100/quantity
FROM
inventory;
B．SELECT id_number, NVL(100/quantity, 0)
FROM
inventory;
C．SELECT id_number, NULL(100/quantity, 0)
FROM
inventory;
D．SELECT id_number, TO_CHAR(100/quantity, 0)
FROM
inventory;
E．SELECT id_number, NVL(100/quantity, ’999.00’)
FROM
inventory;