The Problem with Relying on a Point Estimate of a Population

Short Answer

The problem with relying on a point estimate of a population parameter is that: $\begin{array}{|l|l|}\hline A&\text {it has no variance. }\\\hline B&\text { it might be unbiased.}\\\hline C&\text { it might not be relatively efficient.}\\\hline D&\text {it does not tell us how close or far the point estimate might be from the parameter. }\\\hline \end{array}$