Ground water flows through an aquifer with a cross-sectional area of 1.0 × 104 m2 and a length of 1500 m. Hydraulic beads are 300 m and 250 m at the ground water entry and exit points in the aquifer respectively. Ground water discharge into stream is at the rate of 1500 m3/day. The corresponding hydraulic conductivity of this aquifer will be

• A. 3.5 m/day
• B. 4.5 m/day
• C. 5.0 m/day
• D. 5.5 m/day