In a perfectly competitive market profit attracts entry

To carry out an optimization analysis:

A) only direct costs incurred in a project are to be estimated. B) all costs are required to be converted to a same unit of measurement. C) only indirect costs incurred in a project are to be estimated. D) different types of costs are measured in different units.

As globalization tends to increase the proportion of imported inputs relative to domestically supplied components

A) the nominal tariff automatically increases. B) the rate of (effective) protection automatically decreases. C) the nominal tariff automatically decreases. D) the rate of (effective) protection automatically increases. E) the amount of tariffs levied increases.