Compare the alternatives below using present worth analysis at i = 6% per year and a 4-year study period. Choose the closest answer.

Machine A Machine B

First cost $20,000 $30,000

Annual Cost per year $9,000 $7,000

Salvage Value $4,000 $5,000

Answers:	1. Select Machine B as it is $2,748 cheapter.
	2. Select Machine B as it is $1,281 cheapter.
	3. Select Machine A as it is $5,248 cheapter.
	4. Select Machine A as it is $3,348 cheapter.

please choose the answers 1 2 3 or 4. Please show work