JANOME 4mm & 6mm HEMMER FOOT SET D1 & D2 - 200326001 - CATEGORY B & C

The hemmer foot, sometimes referred to as the rolled hemmer is used to stitch the narrow rolled hems usually found on shirt tails, table linens and along the edge of frills.
The hemmer is designed with a scroll shaped feeder on top and a straight groove on the underside which determines the width of the finished hem.
There are three different sizes of hemmer foot available. The 4mm and 6mm hemmer feet are for medium to heavier fabrics and are available as a boxed set.

A nice addition to the sewing box.

This foot is a Genuine Janome item - in Janome packaging.

Which Category feet does my machine take? A, B, C or D?