Positive logic in a logic circuit is one in which______________?

A. logic 0 and 1 are represented by 0 and positive voltage respectively
B. logic 0 and, -1 are represented by negative and positive voltages respectively
C. logic 0 voltage level is higher than logic 1 voltage level
D. logic 0 voltage level is lower than logic 1 voltage level

highest conductivity_____________?

B. lowest temperature co-efficient
C. good mechanical strength
D. good corrosion resistance
E. easy solderable and drawable quality
F. all of the above