Thorpe Ltd Owns 70% of the Issued Share Capital of Perkins

Thorpe Ltd owns 70% of the issued share capital of Perkins Ltd.Perkins Ltd owns 80% of the issued share capital of Hackett Ltd and 60% of the issued share capital of Klim Ltd.For the year ended 31 December 20X0 each company reported the following profits/(losses) :
$\begin{array} { l c } & \$ \\\text { Thorpe Ltd } & ( 800000 ) \\\text { Perkins Ltd } & ( 600000 ) \\\text { Hackett Ltd } & 700000 \\\text { Klim Ltd } & 700000\end{array}$
-What is the amount of the ultimate parent shareholders' indirect interest in Perkins Ltd's net result for this financial year?

A) $600 000 loss
B) $490 000 loss
C) $420 000 loss
D) Nil