What is the resistivity of n-type semiconductors given: Density of conducting electrons $=8 \times 10^{13} /cc$; Density of holes $=5 \times 10^{12} /cc$ mobility of electron $=2.3 \times 10^4 cm^2 /v-s$ mobility of holes $=100 cm^2 /v-s$

Question

$(a)\;0.12 \Omega\;m \\ (b)\;1.23 \Omega\; m \\ (c)\;0.34 \Omega\; m \\ (d)\;0.034 \Omega \;m $