Answer the question. A dentist is deciding between two X-ray machines for his new office. Estimated costs for each machine are the following: Machine A B Installed cost $36,000 $38,000 Annual maintenance cost $1250 $950 Market value at year 6 $5750 $6250 Life, years 6 6 Which option below correctly represent the AW equation for Machine B? Use a MARR of 15% and a study period of 6 years. AW(B) = -38,000(A/P, 15%, 6) - 950 + 6250(A/F, 15%, 6) AW(B) = -38,000 - 950*6 + 6250 AW(B) = -38,000(A/P, 15%, 6) - 950*6 + 6250(A/F, 15%, 6) AW(B) = -38,000(A/P, 15%, 6) - 950 + 6250