Answer:
d) Both a) and b) are true.
The up and down technique is best suited for cutting very large foods such as cabbage and sweet potatoes.
Explanation:
The rolling technique is widely used in oriental cuisine and serves to present a very beautiful aesthetic quality in food. This technique is performed with straight movements made with the blade backwards or forwards, which allows the shape of the cut is the rolling of the food after each cut.
Despite being a highly requested technique, rolling is not indicated for very large food cuts, because it does not promote the beauty of the food. In this case it is better to use the "up and down" technique.