Congress enacts the ad restriction act (ara) to limit advertising in certain circumstances. the ara will be considered valid if it directly advances a substantial government interest.
a. and goes no further than necessary to achieve its purpose.
b. without regard to how "far" it goes.
c. and the parties affected by it can elect how "far" to go in applying it.
d. and goes further than necessary to ensure full coverage.

You are the manager of a large crude-oil refinery. as part of the refining process, a certain heat exchanger (operated at high temperatures and with abrasive material flowing through it) must be replaced every year. the replacement and downtime cost in the first year is $165 comma 000. this cost is expected to increase due to inflation at a rate of 7% per year for six years (i.e. until the eoy 7), at which time this particular heat exchanger will no longer be needed. if the company's cost of capital is 15% per year, how much could you afford to spend for a higher quality heat exchanger so that these annual replacement and downtime costs could be eliminated?