Assuming initially that the required reserve ratio $-10\%,$ the currency$-$deposit ratio $-75\%,$ and the excessreserve ratio $=156\%,$ an increase in the currency$-$deposit ratio to $150\%$ causes the M$1$ money multiplier toeverything else held constant a$.$ decrease from $0\mathrm{.}73$ to $0\mathrm{.}61$ b$.$ increase from $0\mathrm{.}73$ to $0\mathrm{.}78$ c$.$ increase from $1\mathrm{.}54$ to $1\mathrm{.}67$ d$.$ decrease from $1\mathrm{.}67$ to $1\mathrm{.}54$