SVB Bank, Dec $31,2022$: in billion USD $($simplified$)\backslash (\{\}^\{1\}\backslash )($a$)$ Research SVB$\text{'}$s business model and explain how it contributed to the bank's demise. $($b$)$ What was the chain of events which led to the ultimate failure of the bank? Present a time line in tabular form starting with the ultra$-$low interest rate environment around the pandemic. $($c$)$ Analyze the impact of rising interest rates on SVB$\text{'}$s debt$-$securities portfolio $($Treasuries$,$ MBS$,$ Agencies, etc.$)$ whose average duration stood at $5\mathrm{.}6$Y on December $31,2022$ and had been largely unchanged from Q$1\text{'}22$ to Q$1\text{'}23,$ i$.$e$.,$ all of $2022$ up to the bank's failure. During the same time period, composite long$-$term UST rates $(\backslash (\backslash$geq $10\backslash$mathrm$\{$Y$\}\backslash ))$ moved from $\backslash (2\mathrm{.}00\backslash \%\backslash )$ on Jan $03,2022$ to $\backslash (4\mathrm{.}19\backslash \%\backslash )$ on Mar $02,2023.$ What is the impact of the Fed's tighter monetary policy on the investment portfolio's value? Why does it matter and what is the consequence?