Option 1 -> Incorrect because statement (A) is false - the curves are inverse 'U' shaped, not 'U' shaped.
Option 2 -> Incorrect because statement (A) is false - the curves are inverse 'U' shaped, not 'U' shaped.
Option 3 -> Incorrect because statement (A) is false - the curves are inverse 'U' shaped, not 'U' shaped.
Option 4 -> Includes statements (B), (C), and (D) which are all correct regarding the MP-AP relationship.
Hence, Option 4: (B), (C) and (D) only -> Statement (B) is correct as both MP and AP curves are inverse 'U' shaped (rising initially, reaching maximum, then declining due to law of diminishing returns). Statement (C) is correct because when marginal product exceeds average product, it pulls the average upward, causing AP to increase. Statement (D) is correct because when marginal product is below average product, it pulls the average downward, causing AP to decrease. Statement (A) is incorrect as the curves are inverse 'U' shaped, not 'U' shaped. -> correct