cA transportation problem has two origins: A can supply $20$ units and B can supply $30$ units. This problem has two destinations: C requires $25$ units and D requires $35$ units. Based on considering balancing $($supply$/$demand$),$ which of the following is true? $[$Blank$1]$

Group of answer choices

The problem will require a dummy supply with a capacity of $10$ units.

None of the choices are true.

The problem is unbalanced and cannot be solved by the transportation method.

The problem will require a dummy demand with a capacity of $10$ units.

Destinations C and D must each receive $5$ units less than they require.