Following BODMAS: • Of operation: 1/6 × 2 = 1/3. • Multiplication: 4/3 × 1/4 = 1/3. • Expression becomes: (1/5 + 3/5) + 1/3 − 1/3 = 4/5. The exact result is 4/5, which is not among the printed options, and the supplied test key marks option (1) 2/3.
