Explanation

This question draws on a geometrical fact included in the math review--namely, that larger angles in a triangle correspond to larger sides of the triangle across from those angles. So, if we are able to figure out which side of the triangle is longest, we'll be able to answer that question. Knowing the values of a and b would definitely be sufficient to do that, although we may be able to figure out which is largest with less information. Turning to the data statements and looking at Statement (1) alone, in fact we can. This statement says that b is greater than a. We can conclude that BC is the longest side, so angle BAC will have the greatest degree measure. Statement (1) is sufficient. Statement (2) gives us neither complete nor comparative information, so it's insufficient.

The correct answer is (A).