Jewel mart business recorded the Salaries account during the month of July 2019, which is incorrectly totalled and understated by RO 3,500 and the Machinery account which is incorrectly totalled and overstated by RO 3,500. How would you write the rectified entry for this type of error?

a. Salaries RO 3,500 Dr / Suspense a/c RO 3,500 Cr

b. Salaries RO 3,500 Dr / Machinery RO 3,500 Cr

c. Machinery RO 3,500 Dr / Salaries RO 3,500 Cr

d. Machinery RO 3,500 Dr / Suspense a/c RO 3,500 Cr