The diagram below shows four coastline locations on earth with respect to the moon at a given time. earth is shown as a circle with a smaller circle labeled moon above it. points a and c are marked at the top and bottom ends of the circle representing earth. points b and d are marked at the left and right sides of the circle representing earth. in this current position, which coastline(s) are experiencing a daily high tide? only a only b both a and c both b and d