Feedback suggests there's a bit missing from the Q above, rhumb line track is given as 250 deg.
Convergency = change of long x sin mean lat
= 4 deg x sin 52.5 deg (roughly)
= 3.2 deg (roughly)
conversion angle is half this, 1.6 deg
subtract from 250 to get 248.4 deg (roughly)
Otherwise what selfin said ^^^^, but by the standards of EASA exams its an OK question.