an unadjusted trial balance has a balance of 2400 in Prepaid Rent which represents 6 months of rent pas in advance . After the adjusting entry to record one month's rent , the balance in rent expenses is................ and the balance in prepaid rent is..............................

a $ 2200 , 200$

b . 200 ,2200 $

c. 400$,2000$

d- 2000$ , 400$