The datum from which the predicted heights of tides are reckoned in the tide table is（）.

The datum from which the predicted heights of tides are reckoned in the tide table is（）.
A.mean low water
B.the same as that used for the charts of the locality
C.the highest possible level
D.given in table three of the tide tables
正确答案：the same as that used for the charts of the locality