A bank owns $$20$ million of Treasury bonds with a risk$-$

weighting of $0\%,$$$50$ million of residential mortgages

with a risk$-$weighting of $50\%,$ and $$30$ million of

commercial mortgages with a risk$-$weighting of $100\%.$

The bank's risk$-$weighted assets are currently

and it can improve its capital ratios by allocating a

greater portion of its portfolio

Treasury

bonds.

$$100$ million; towards

$$100$ million; away from

$$55$ million; away from

$$55$ million; towards