Book value of fixed assets

Property, Plant, and Equipment $($in millions$)$:

a$.$ Compute the book value of the fixed assets for the current year and the preceding year.

Current year book value $($in millions$)$ $

Preceding year book value $($in millions$)$ $

million of additional

fixed assets, which was offset by the additional depreciation expense of $

million taken during the current year.

b$.$ Would you normally expect Cannington's book value of fixed assets to increase or decrease during the year?