State whether “other things constant” is likely to hold in the following supply/demand analyses:

a. The impact of an increase in the demand for pencils on the price of pencils.

	Yes
	No

b. The impact of an increase in the supply of labor on the quantity of labor demanded.

	Yes
	No

c. The impact of an increase in aggregate savings on aggregate expenditures.

	Yes
	No

d. The impact of a new method of producing CDs on the price of CDs.

	Yes
	No