When considering barriers to international communication, companies should be aware that

a$.$ noise tends to increase the probability of effective communication.

b$.$ source effects can be beneficial for an international business when potential consumers in a target country have a bias against foreign firms.

c$.$ many international businesses try to promote positive source effects by deemphasizing their foreign origins.

d$.$ fewer firms vie for the attention of prospective customers in developing countries, thus the noise level is lower.

e$.$ research suggests consumers use country of origin when evaluating a product, when they have datailed knowledge of the product.