Which of the Following Is Usually NOT a Factor That

Which of the following is usually NOT a factor that must be considered when estimating the revenues and costs arising from a new product?

A) The cost of capital tends to fluctuate over the period in question.
B) The prices of technology products generally fall over time.
C) Competition tends to reduce profit margins over time in most industries.
D) Sales of a new product will typically accelerate, plateau, and ultimately decline over time.