Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R): Assertion (A): Sugarcane and sugar production in U.P. is more than Maharashtra but productivity is less. Reason (R): Most of the sugar factories in Maharashtra are in cooperative sector. Codes:

Both statements are true, but R does not explain A, so the answer is B.

• Assertion (A): UP is India's largest sugarcane producer. In the 2018-19 season its sugar output edged past Maharashtra's, but its cane yield per hectare is clearly lower than Maharashtra's. Sugar output comparisons swing from year to year, and Maharashtra often leads, so check the specific season.
• Reason (R): Most of Maharashtra's sugar mills are cooperatives (the sahakari sakhar karkhana model), so R is factually true.
• Why R does not explain A: Cooperative ownership has no bearing on UP's larger cane area or its lower yield per hectare. Yield differences come from irrigation, soil, varieties and agronomy. Ownership structure is a governance point, not a production explanation.
• Why C and D are wrong: A is true, and R is also true, so neither C nor D fits.

Core concept: the sugar economy, sugarcane zones and cooperative governance. Mains angle: FRP, sugar-sector diversification into ethanol, and the financial health of cooperative mills.

Trap: Assuming that a true reason must explain the assertion. Always test whether the reason actually causes the outcome in the assertion.