A $200 \mathrm{~mm}$ well fully penetrates a confined aquifer. After a long period of pumping at a rate of 1400 litres per minute, the drawdowns in the observation wells located at $25 \mathrm{~m}$ and $40 \mathrm{~m}$ from the pumping well are found to be $2.6 \mathrm{~m}$ and $1.9 \mathrm{~m}$, respectively. The transmissivity of the aquifer in $\mathrm{m}^{2} \operatorname{day}^{-1}$ is
(A) 190
(B) 198
(C) 206
(D) 215
A $200 \mathrm{~mm}$ well fully penetrates a confined aquifer. After a long period of pumping at a rate of 1400 litres per minute, the drawdowns in the observation wells located at $25 \mathrm{~m}$ and $40 \mathrm{~m}$ from the pumping well are found to be $2.6 \mathrm{~m}$ and $1.9 \mathrm{~m}$, respectively. The transmissivity of the aquifer in $\mathrm{m}^{2} \operatorname{day}^{-1}$ is
(A) 190
(B) 198
(C) 206
(D) 215