A border strip of $8 \times 250 \mathrm{~m}$ is being irrigated by a border stream of $50 \mathrm{lps}$. The infiltration capacity of the soil is $25 \mathrm{~mm} \mathrm{~h}^{-1}$ (assumed to be constant throughout the period of irrigation). The average depth of the advancing sheet of water over the land is $70 \mathrm{~mm}$. The time required to irrigate the border strip, in minutes, will be

(A) 16.7

(B) 25.7

(C) 54.7

(D) 67.7

A border strip of $8 \times 250 \mathrm{~m}$ is being irrigated by a border stream of $50 \mathrm{lps}$. The infiltration capacity of the soil is $25 \mathrm{~mm} \mathrm{~h}^{-1}$ (assumed to be constant throughout the period of irrigation). The average depth of the advancing sheet of water over the land is $70 \mathrm{~mm}$. The time required to irrigate the border strip, in minutes, will be

(A) 16.7

(B) 25.7

(C) 54.7

(D) 67.7

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