Crops are grown in a field having soil, which has field capacity of $30 \%$ and permanent wilting point of $13 \%$. The effective depth of root zone is $80 \mathrm{~cm}$. Irrigation water is supplied when the average soil moisture drops to $20 \%$. Consider density of the soil as $1500 \mathrm{~kg} / \mathrm{m}^{3}$ and density of water as $1000 \mathrm{~kg} / \mathrm{m}^{3}$. If the daily consumptive use of water for the crops is $2 \mathrm{~mm}$, the frequency of irrigating the crops (in days), is

(A) 7

(B) 10

(C) 11

(D) 13

Crops are grown in a field having soil, which has field capacity of $30 \%$ and permanent wilting point of $13 \%$. The effective depth of root zone is $80 \mathrm{~cm}$. Irrigation water is supplied when the average soil moisture drops to $20 \%$. Consider density of the soil as $1500 \mathrm{~kg} / \mathrm{m}^{3}$ and density of water as $1000 \mathrm{~kg} / \mathrm{m}^{3}$. If the daily consumptive use of water for the crops is $2 \mathrm{~mm}$, the frequency of irrigating the crops (in days), is

(A) 7

(B) 10

(C) 11

(D) 13

127