After 19 liters of petrol were poured into the tank, it was still 5% empty. How much petrol must be poured into the tank in order to fill it? Choose the correct choice from the following options
A) 7 liters	B) 4 liters	C) 3 liters	D) 1 liters	E) 6 liters
95% ----------- 19   5% ------------ ?   =&gt; 1 liter   Answer: 1 liters
<result>D</result>
After 19 liters of petrol were poured into the tank, it was still 5% empty. How much petrol must be poured into the tank in order to fill it?