Which of the following are examples of project externality?

I. the loss of sales due to increased competition in the product market

II. the loss of sales because your chief competitor just opened a store across the street from your store

III. the loss of sales due to a new product which you recently introduced

IV. the loss of sales due to a new product recently introduced by your competitor

A. III only

B. III and IV only

C. I, III and IV only

D. II and IV only

Group of answer choices

a only

c only

d only

b only