Betsy possesses a cake decorating business, and working alone, she can make 10 wedding cakes a day. Though, whenever Betsy hired a helper, output enlarged to 30 wedding cakes daily. This raised output is most probable an outcome of: (1) Law of diminishing returns. (2) Production possibilities. (3) Technological innovation. (4) Division of labor. (5) Comparative benefit.
Choose the right answer from the above options.