AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Option A: Both A and R are true, and R is the correct explanation of A.
Rice is a commercial crop in Punjab/Haryana but a subsistence crop in Odisha — the same crop differs by region and purpose, which R correctly explains.
The textbook explicitly states: "The degree of commercialisation of agriculture varies from one region to another. For example, rice is a commercial crop in Haryana and Punjab, but in Odisha, it is a subsistence crop." This directly supports both A and R, and R logically explains why A is true — making Option A the correct choice.