Production-relationship approach:
In farm management theory, enterprises can be complementary, supplementary, or competitive. A supplementary relationship means one enterprise uses otherwise idle resources, such as off-season labour or land, without drawing them away from another enterprise, so there is no genuine combination problem of allocating scarce resources between them, making Statement I correct. A joint relationship, however, produces two or more outputs from a single process, such as wheat grain and straw, and the producer must still decide the input level that optimally balances the value of both joint products against market prices, so decision-making remains essential, not insignificant, making Statement II false. Hence, I true and II false gives option 3.