The correct options are
A
It states that no matter how you group the terms in an addition or subtraction problem, the answer will remain same.
C
It only works for subtraction.
Associative property states that no matter how you group the terms in a problem, the answer will remain same.
Associative property holds good for addition and multiplication of whole numbers.
It does not work for division and subtraction of whole numbers.
For example,
(1 + 2) + 3 = 1 + (2 + 3)
(2 x 3) x 4 = 2 x (3 x 4)
(2 ÷ 3)÷ 5 ≠ 2 ÷ ( 3 ÷ 5)
(4 - 2) - 4 ≠ 4 - (2 - 4)