Marina Exam 2017: After sailing for several minutes (making 10 knots through the water) and in constant monitoring of your radar screen, you noticed that a contact has remained in the same position relative to yours, what could be the possible conclusion of the scenario?

After sailing for several minutes (making 10 knots through the water) and in constant monitoring of your radar screen, you noticed that a contact has remained in the same position relative to yours, what could be the possible conclusion of the scenario? 

A.the radar is showing false echoes and is probably defective 
B.the contact is on the same course and speed as your vessel 
C.the contact is dead in the water 
D.the contact is on a reciprocal course at the same speed as your vessel 

Answer:
 


 B.the contact is on the same course and speed as your vessel