AsrainfallbegantodecreaseintheSouthwest about the middle of the twelfth century, most of the Monument Valley Anasazi abandoned their homes to join other clans whose access to water was less limited. (A) whose access to water was less limited (B) where there was access to water that was less limited (C) where they had less limited water access (D) with less limitations on water access (E) having less limitations to water access 解释说C的they指代不清,但是不是应该是按照就近指代来判断吗?they不应该就近指代clans吗?如果不在这里用就近指代,那什么时候才需要用呢?