Option 1: (B), (D), (A), (C) -> This represents the correct chronological sequence of the AP curve shape. Starting with (B) where MP and AP are equal at the first output level, then (D) where both rise but MP rises faster, followed by (A) where MP falls but AP continues rising as MP > AP, and finally (C) where MP falls below AP causing AP to also fall. This sequence correctly describes the typical production relationship where MP initially equals AP, rises above it, then falls below it, causing AP to eventually decline -> correct