Threshing is carried out with the help of a machine called which is a combination of and thresher.
Find the correct match of both the columns.
Machine/tool used Purpose
(i) Sickle (a) Separating grain and chaff (ii) Harvester (b) Harvesting and threshing (iii) Winnowing machine (c) Manual harvesting (iv) Combine (d) Mechanical harvesting