【单选题】

It can be inferred from the passage that which of the following would occur if the chimneys formed by superbubbles failed to deliver their hot interior gas Ⅰ. The surrounding galaxy would lack enough cool gas clouds to form new stars.Ⅱ. Positive feedback in the star formation process would go uncheckeD、Ⅲ. More and more O-type stars would come into existence from the static gas clouds.

A、
A、Ⅰonly
B、Ⅱ only
C、Ⅰand Ⅱ only
D、Ⅰand Ⅲ only
E、Ⅰ, Ⅱ and Ⅲ