The arrow and the dots follow two different rules along each row, and the dot rule changes from row to row. Which cell completes the grid?

Along every row the arrow turns a quarter turn clockwise (up, right, down). The dots increase by 1 in the top row (1, 2, 3), by 2 in the middle row (2, 4, 6) and so by 3 in the bottom row (0, 3, 6). After pointing down the arrow points left, so the answer is a left arrow with 6 dots: (c). (a) adds only 2 dots, (b) turns the arrow back to the right and (d) turns it anticlockwise.