Marina Exam Questions: What is the action to take while in fog if a vessel ahead is detected by radar?

Marina Exam Questions

What is the action to take while in fog if a vessel ahead is detected by radar? 

A. each vessel to comply with the rules 
B. contact the other vessel by VHF 
C. determine if the other vessel is a give-way or a stand-on vessel 
D. alter course to starboard if the other vessel is a stand-on vessel


Answer:  A. each vessel to comply with the rules