Which of the following could be the equation of the function below? A coordinate plane. The graph starts and rises to (negative 24 pi comma 1). It starts to fall through (negative 21 pi comma 0) to (negative 18 pi comma negative 1). It then rises through (negative 15 pi comma 0) to (negative 12 pi comma 1). It then falls through (negative 9 pi comma 0) to (negative 6 pi comma negative 1). It then rises through (negative 3 pi comma 0) to (0 comma 1). It then falls through (3 pi comma 0) to (6 pi comma negative 1). It then rises though (9 pi comma 0) to (12 pi comma 1). It then falls through (15 pi comma 0) to (18 pi comma negative 1). It then rises through (21 pi comma 0) to (24 pi comma 1).