Statements : All dolls are windows. All bottles are windows. All cars are bottles. Conclusions : I. All cars are windows. II. Some cars are dolls. III. Some windows are cars.

The correct answer is $\boxed{\text{E}}$. None of the conclusions follow from the given statements.

The first statement is “All dolls are windows.” This means that every doll is a window. The second statement is “All bottles are windows.” This means that every bottle is a window. The third statement is “All cars are bottles.” This means that every car is a bottle.

The first conclusion is “All cars are windows.” This conclusion does not follow from the given statements. The first statement says that all dolls are windows, but it does not say anything about cars. The second statement says that all bottles are windows, but it does not say anything about cars. The third statement says that all cars are bottles, but it does not say anything about windows. Therefore, there is no reason to believe that all cars are windows.

The second conclusion is “Some cars are dolls.” This conclusion does not follow from the given statements. The first statement says that all dolls are windows, but it does not say anything about cars. The second statement says that all bottles are windows, but it does not say anything about cars. The third statement says that all cars are bottles, but it does not say anything about dolls. Therefore, there is no reason to believe that some cars are dolls.

The third conclusion is “Some windows are cars.” This conclusion does not follow from the given statements. The first statement says that all dolls are windows, but it does not say anything about cars. The second statement says that all bottles are windows, but it does not say anything about cars. The third statement says that all cars are bottles, but it does not say anything about windows. Therefore, there is no reason to believe that some windows are cars.