Which of the Following, If True, Would Weaken the Argument

Multiple Choice

Which of the following, if True, would weaken the argument for a price increase?

A) The input costs of raw materials are expected to increase further in the coming months.
B) Customers are loyal to the brand mainly because they believe in the quality of ingredients used.
C) Anon's competitors have announced an increase in prices.
D) One of Anon's major competitors has just declared bankruptcy.
E) Market research done by the company reveals that demand for Widgets is readily affected by the price.