Final answer:
Without a diagram or specific angle measures, it is not possible to accurately determine the arc measure of minor arc BC. The relationship between the angle measure and arc length in a circle is needed to calculate the arc measure.
Step-by-step explanation:
In determining the arc measure of minor arc BC, it is essential to consider the properties of a circle and how arc measures relate to angle measures. It is known that a circle comprises 360 degrees and the arc length is proportional to the arc's central angle measure in degrees. Without additional information such as a diagram or specific angle measures related to the minor arc BC, it is impossible to definitively calculate the arc measure or choose the correct option from the given alternatives. However, if any angle measure or its relationship to arc BC can be inferred from provided equations or circle properties, then the correct arc measure in degrees can be ascertained by applying those logical relationships or circle theorems.