2290 question.Category question for partial payment

have a 2290 question. I am trying to add a truck that was never on the road last year or the previous year.We all know for the full year, we do category "V", and pay the $550.The month I was trying to add this vehicle was january "202001".I paid$275 at the IRS office but IRP rejected my 2290 because the category wasnt filled out.Definitley not a V category.If I started in Januray this year, what category should it be on the 2290 form.?

 

V is what they need.Category. I was getting confused.I was using period for lettering but the class determines the letter.Thx

 

IRP accepted . Thx . The category V wasnt listed on the 2290.