When a steadily flowing gas flows from a larger-diameter pipe to a smaller-diameter pipe, what happens to (a) its speed, (b) its pressure, and (c) the spacing between its streamlines?

When a steadily flowing gas flows from a larger-diameter pipe to a smaller-diameter pipe, the following happens to the parameters below:

(a) its speed, - Increases

(b) its pressure - decreases

(c) the spacing between its streamlines - decreases