If the effective permeability k’ is 6*10¯⁷cm/s and kᵧ=4*10¯⁷cm/s, then kₓ is equal to ________

If the effective permeability k’ is 6*10¯⁷cm/s and kᵧ=4*10¯⁷

1.	If the effective permeability k’ is 610¯⁷cm/s and kᵧ=410¯⁷cm/s, then kₓ is equal to ________
A.	6*10¯⁷cm/s
B.	7*10¯⁷cm/s
C.	8*10¯⁷cm/s
D.	9*10¯⁷cm/s
Answer» E.