(1) the following are sales tax totals for the first trading period of a firm: sales tax on : sales———–$ 4,900 purchases——$ 3,200 returns outwards———$ 245 returns inwards———-$320 What is the balance on the sales tax account after these transactions have been posted ? (i) $ 1625 Dr (ii)$ 1775 Dr (iii)$ 1776 Cr (iv)$ 1625 Cr