Which equipment has the lowest width?

Correct option is A

The width of agricultural equipment is an important parameter that influences the efficiency and productivity of farming operations.
(a) Disc plough: A disc plough is a tillage equipment used for primary tillage to break and invert the soil. It typically consists of a series of individually mounted disc blades mounted on a common shaft. The width of a disc plough is determined by the number and size of the discs. It is generally narrower compared to other tillage implements. Disc ploughs are suitable for breaking hard and compacted soils, and their design allows for efficient soil inversion.