The correct answer is: B. Balanced Transportation Problem
A transportation problem is a type of linear programming problem that deals with the distribution of goods from multiple origins to multiple destinations. The goal is to minimize the total cost of transportation, while satisfying the supply and demand constraints at each origin and destination.
A balanced transportation problem is one in which the total supply available at the origins exactly satisfies the total demand required at the destinations. This means that there is no excess supply or demand, and all of the goods can be shipped.
A degenerate solution is a solution to a transportation problem in which there is a route with a flow of zero. This can happen if the supply and demand constraints are not perfectly balanced.
An unbalanced transportation problem is one in which the total supply available at the origins does not exactly satisfy the total demand required at the destinations. This means that there is either excess supply or demand, and some of the goods cannot be shipped.
Therefore, the correct answer is B.