When a Machine Having a Net Book Value of $15,000

When a machine having a net book value of $15,000 is sold for $12,000:

A) current assets decrease, equipment (net) increases, and net income increases.
B) current assets increase, equipment (net) decreases, and net income increases.
C) current assets increase, equipment (net) decreases, and net income decreases.
D) current assets increase, equipment (net) increases, and net income decreases.