National Bank has the following balance sheet $($in millions$)$ and has no off$-$balance$-$sheet activities. Assets Liabilities and EquityCash $ $20$ Deposits $ $980$Treasury bills $40$ Subordinated debentures $25$Residential mortgages $600$ Common stock $45($category $1,$ loan$-$to$-$valueratio $=70\%)$Retained earningsTotal liabilities and equity$40$$$1,090$Business loans $430$Total assets $$1,090$ a$.$What is the CET$1$ risk$-$based ratio? b$.$ What is the Tier I risk$-$based capital ratio? c$.$ What is the total risk$$based capital ratio? d$.$ What is the leverage ratio? e$.$ In what capital category would the bank be placed? f$.$ What is the capital conservation buffer? How would this buffer affect youranswers to question a to e $?$ g$.$ What is the countercylical capital buffer? If the home country set a countercycli$-$cal capital buffer of $2\mathrm{.}5$ percent, how would this buffer affect your answers toquestion a to e$?$