【单选题】

The effects of "several acts of the Maryland and Virginia legislatures" passed during and after the 1660's were that they
A．negatively affected the pre-1660’s position of Black as well as of White servants.

B．had the effect of impairing rather than improving the position of White servant.
C．at the very least, caused the position of White servants to remain no better than it had been before the 1660’s.
D．at the very least, tended to reflect the attitudes toward Black servants that already existed before the 1660’s.