The Hooghoudt equation $($see equation $2\mathrm{.}6$; Lecture Topic #$2)$ can be used to describe the flow of groundwater to parallel field drains under steady state conditions. If the water level in the drain is very low, the Hooghoudt equation that describes the flow above drain level is given as follows: $-1-122$ maximum elevation of water table above the drain $($cm$)$ aturated hydraulic conductivity dr Where, q : drainage discharge $($cm h $)$ h: K: s of the soil $($cm h $)$ L: $4$Kh q $=$ L ain spacing cm$()$ The saturated hydraulic conductivity of a sandy loam soil is $5$ cm h$-1.$ The depth of water table midway between the drains is $32$ cm$.$ If the drainage rate at the midpoint between the drain lines is $1\mathrm{.}5$ cm h$-1,$ the drain line spacing required to prevent ponding is: $($A$)125\mathrm{.}2503$ cm $($B$)145\mathrm{.}7508$ cm $($C$)138\mathrm{.}4525$cm $($D$)116\mathrm{.}8475$ cm $($E$)134\mathrm{.}2025$ cm