Question Statement:
In the standard classification of agricultural three-point linkages (ISO 730 / IS 4468), which of the following statements is/are correct?
Options:
- (A) Category 1 (Cat I) is rated for tractors up to $35\text{ kW}$ (approx. $48\text{ hp}$) with lower hitch pin diameter of $22.4\text{ mm}$.
- (B) Category 2 (Cat II) is rated for tractors from $30\text{ to } 92\text{ kW}$ (approx. $40\text{ to } 125\text{ hp}$) with lower hitch pin diameter of $28.7\text{ mm}$.
- (C) The top link hitch pin diameter is smaller than the lower link hitch pin diameter across all standard ISO categories.
- (D) Category 4 hitches are designed specifically for two-wheel walk-behind power tillers.