Which of the following methods of evaluating investment projects can properly evaluate projects of unequal lives?

Verdant Avionics makes aircraft instrumentation

Their basic navigation radio requires $140 in variable costs and requires $3,000 per month in fixed costs. If it processes the radio further to enhance its functionality, it will require an additional $30 per unit of variable costs and $300 per month in fixed costs. The marketing manager believes the sales price of the radio can be increased from $250 to $280. In making this decision, the amount of additional fixed costs per month is a relevant cost. Indicate whether the statement is true or false

The effective date for a residential purchase agreement is the date:

a. the deposit was given to the seller by the buyer. b. the contract was written. c. the buyer signed the contract. d. the seller's acceptance of the offer was properly communicated to the buyer.