Which represents the polynomial written in standard form? 8x2y2 – + 4x4 – 7xy3 –7xy3 + 8x2y2 – + 4x4 4x4 – 7xy3 – + 8x2y2 4x4 + 8x2y2 – – 7xy3 –7xy3 – + 8x2y2 + 4x4