* A: This statement will not work because TRUNC(quantity, -1) will truncate the quantity to zero decimal places when the number is a negative power of ten, which does not guarantee that the quantity is a multiple of ten.
* B: This statement is correct. The MOD function returns the remainder of a division. If MOD(quantity,
10) equals zero, it means that quantity is a multiple of ten.
* C: This statement is correct. FLOOR(quantity / 10) equals TRUNC(quantity / 10) when quantity is an exact multiple of ten, as FLOOR returns the largest integer less than or equal to a number, and TRUNC will truncate the decimal part.
* D: This statement is incorrect because TRUNC(quantity) would remove any decimal places from quantity, and comparing it to quantity / 10 will not guarantee that the quantity is a multiple of ten.
* E: This statement is incorrect. ROUND(quantity, 1) will round the quantity to one decimal place, not check if it's a multiple of ten.