$2\mathrm{.}2.$ A flat dipping deposit that is $400$ m to $600$ m deep is envisaged to be accessedby either a trackless decline at a slope of $8\backslash$deg $,$ a rail$-$bound incline at $18\backslash$deg or a vertical shaft. Read the additional information in the table below and answer the following questions:Parameter Decline Incline Vertical shaftDimensions $5$ m x $5$ m $3$ m x $3$ m $8$ m diameterDevelopment advance rates $($m$/$day$)5\mathrm{.}43\mathrm{.}73\mathrm{.}6$Development costs $($R$/$m$)1800002000001000000$Hoisting costs $($R$/$t$)400030003600$Rock hoisting capacity $($t$/$day$)1636\mathrm{.}36412002182$a$.$ Which excavation will require the largest metres to be developed to access the entire orebody?b$.$ Which excavation will require the largest tonnages to be developed toaccess the entire orebody? $($Use an average bulk density of $4$ t$/$m$3)$c$.$ Based only on the information at hand, which alternative should be chosen?d$.$ If the choice of the type of access development is based solely on how quickly the reef will be intersected, which excavation should be chosen