A conductivity cell has been calibrated with a 0.01 M, 1:1 electrolytic solution (specific conductance (K = 1.25 x 10-3 S cm-1) in the cell and the measured resistance was 800Ω at 25° C . The cell constant is,
(a) 10-1 cm-1
(b) 10-1 cm-1
(c) 1 cm-1
(d) 5.7 x 10-12