Juliet Pty Ltd owns $100\%$ of the voting shares of Marley Pty Ltd$.$ Marley Pty Ltd owns $100\%$ of the voting shares of Butterscotch Pty Ltd$.$ In which of the following situations are consolidated financial statements not required to be produced by any of these companies?

a$.$ Juliet Pty Ltd is a small proprietary company based on consolidated assets and consolidated revenues.

b$.$ Marley Pty Ltd is a small proprietary company based on consolidated assets and consolidated revenues.

c$.$ Butterscotch Pty Ltd is a small proprietary company based on consolidated assets and consolidated revenues.

d$.$ all of the above.