The process of writing repeating decimals or repeating pattern of digits by using a bar is called Bar Notation .
The bar is put above the digits which keeps on repeating after a decimal.
When we divide a fraction then there are three cases .
1) Division comes to end
2) The division does not come to end it goes on for ever
3) The same digits keeps on repeating after the decimal.
The given fraction is
The digit 54 keeps on repeating So the bar is put over 54
The third option is the right answer where the bar is put over 54.