1- Oct 7, customer paid 100,000 2- Oct 13, customer paid 150,000 3- Des 1, customer paid the remaining of merchandise value 4- Des 3 customer return part of merchandise that sells for 60,000 and cost 30,000. Required: Record the necessary entries and prepare Income statement for year- end Des, 31, 2020. Additional information (( selling expenses 5,000 // administrative expenses 12,000 // other expenses 30,000 // income tax %10)) (attach your answer please)