Which of the Following,if True,would Strengthen the Argument in Favor

Multiple Choice

Which of the following,if true,would strengthen the argument in favor of a price increase?

A) Substitutes for Widgets are available in the market.
B) The price of materials consumed along with Widgets has gone up.
C) A change in the environment is likely to stimulate overall demand for Widgets.
D) Competitors have announced that they intend to keep prices at current levels.
E) Relaxation of import restrictions would lead to foreign competitors flooding the market.