Please help! Morris is showing his work in simplifying (−6.7 + 4.3) − 1.2. Step 1: (4.3 − 6.7) − 1.2 Step 2: 4.3 − (6.7 + 1.2) Step 3: 4.3 − (7.9) Step 4: −3.6 Which statement is true? (1 point) a In step 1, Morris used the commutative property. b In step 2, Morris used the distributive property. c In step 3, Morris used the associative property. d In step 4, Morris's answer is incorrect.