Marjorie is conducting a science experiment to measure the amount of pollution produced by car that used gasoline containing different amounts of leads. Identity the dependent and independent variables. (1 point)

A i= conducting a science experiment d= the amount to pollution
B i= gasoline containing amounts of lead d= the amount of pollution
C i= gasoline containing different amounts of lead d= type of car
D i= the amount of pollution d= gasoline containing different amounts lead

A: Independent variable = gasoline containing different amounts of lead

Dependent variable = the amount of pollution