A class of preference shares in which dividend rights are carried forward is

A class of preference shares in which dividend rights are carried forward is called "cumulative". This means that if the company is unable to pay the dividend in a particular year, the unpaid amount will accumulate and be carried forward to the next year. This ensures that the shareholders receive their due dividend when the company is financially capable of paying it. The cumulative feature of preference shares provides greater security to investors than non-cumulative preference shares, as it guarantees a return on their investment.