The table shows a proportional relationship between the mass, in kilograms (\text{kg})(kg)left parenthesis, start text, k, g, end text, right parenthesis, of a dog and the milliliters (\text{mL})(mL)left parenthesis, start text, m, L, end text, right parenthesis of flea medicine a veterinarian prescribes.
Flea medicine prescriptions
Dog's mass (\text{kg})(kg)left parenthesis, start text, k, g, end text, right parenthesis Medicine (\text{mL})(mL)left parenthesis, start text, m, L, end text, right parenthesis
505050 222
101010 0.40.40, point, 4
555 0.20.20, point, 2
? ?
A row of values is missing in the table.
Which of the following numbers of kilograms and milliliters could be used as the missing values in the table?