Option 1 -> Includes statement (B) which is incorrect because in perfect competition MR = AR, not MR > AR.
Option 2 -> Includes statement (B) which is incorrect because in perfect competition MR = AR, not MR > AR.
Option 3 -> Correctly includes (A), (C), and (D). In perfect competition: TR increases at constant rate P; MR remains constant at P; and MR = AR = P.
Option 4 -> Includes statement (B) which is incorrect because in perfect competition MR = AR, not MR > AR.
Hence, Option 3: (A), (C) and (D) only -> In a perfectly competitive market, the firm is a price taker where Price = MR = AR. Statement (A) is true because TR = P × Q, so TR increases at a constant rate equal to the market price. Statement (C) is true because MR equals the constant market price. Statement (D) is true because both MR and AR equal the market price. Statement (B) is false because MR = AR, not MR > AR. -> correct