Answer:
This two statements are false:
A. Fewer inputs and outputs were used.
This statement is false because the idea behind a business expansion is to use more inputs, in order to produce more output, however, for the expansion to be economically positive, the new output produced has to grow proportionally more than the additional input invested.
D. The business became inefficient during the expansion.
We do not know for sure whether the business became more inefficient or not, but it is more likely that it became more efficient after the expansion. Nino's business probably has managed to sell more cars after hiring the additonal workers, and buying the additional computers. This is the very definition of efficiency.