进行水准仪i角检验时,A,B两点相距80m,将水准仪安置在A,B两点中间,测得高差h<sub>AB</sub>=0.125m,将水准仪安置在距离B点2~3m的地方,测得的高差为<img src="https://nimg.ppkao.com/2019-05/tangling/2019051515365270812.jpg?sign=3711c240479bce2c32d263343258dcfb&t=62e6c910" />=0.86m,则水准仪的i角为()</sub>
A、157″
B、-157″
C、0.00076″
D、–0.00076″