What Cruising Altitude Should You Select When Flying On A Magnetic Course Of 120o Assuming You Are Operating On An IFR Flight Plan With An Altitude Assignment Of VFR On Top?

What Cruising Altitude Should You Select When Flying On A Magnetic Course Of 120o Assuming You Are Operating On An IFR Flight Plan With An Altitude Assignment Of VFR On Top? What cruising altitude should you select when flying on a magnetic course of 120 degrees, assuming you are operating on an IFR flight plan