For each of the following cases, indicate $($a$)$ what interest rate columns and $($b$)$ what number of periods you would refer to in looking up the discount rate.

$(1)$ In Table $3($present value of $1)$:

$\backslash$table$[[\backslash$table$[[$Case A$],[$Case B$],[$Case C$]],$Annual Rate,$\backslash$table$[[$Number of$],[$Years Invested$]],\backslash$table$[[$Discounts$],[$per Year$]]],[8\%,5,$Annually$],[10\%,8,$Semiannually$],[12\%,7,$Semiannually$],[,,,($b$)],[$Case A$,,\%,],[$Case B$,,\%,],[$se$,,\%,]]$

$(2)$ In Table $4($present value of an annuity of $1)$:

$\backslash$table$[[,$Annual Rate,$\backslash$table$[[$Number of$],[$Years Involved$]],\backslash$table$[[$Number of$],[$Payments Involved$]],\backslash$table$[[$Frequency of$],[$Payments$]]],[$Case A$,,17,\backslash$table$[[17],[6]],\backslash$table$[[$Annually$],[$Annually$]]],[$Case B$,8\%,,,]]$