Closed die forging requires the provision of flash gutter.

Gutter : It is the additional space provided in the die so that any excess metal can flow and help in the complete closing of the die i.e., to accommodate due to excess volume of material it is required to provide some open space in dies called gutter.

Flash : The excess metal added to the stock to ensure complete filling of the die cavity in the finishing impression is called flash.

Hence, the correct option is (A).