Making a drop-down list based on another drop-down list

Dear Community,

I have to create a form with a drop-down list based on another drop-down list, for example:

- Field A: Option A1 = Type; Option A2 = Color; Option A3 = Size

And then, based on the option of Field A, the follow:

- Field B (if Option A1  was selected): Option B1 = Car; Option B2 = Motorcycle.

- Field B (if Option A2  was selected): Option B1 = White; Option B2 = Black; Option B3 = Red.

- Field B (if Option A3  was selected): Option B1 = Large; Option B2 = Small; Option B3 = Medium.

Please could you help me?

Thanks in advance.

Regards,

Rafael.