BOTH INTERNATIONAL & INLAND In which situation would risk of collision definitely exist?

A
A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right.
B
A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.
C
A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.
D
A vessel is on your starboard quarter, range decreasing, bearing is constant.
E