If only NOR gates can be used to build a circuit for the following expression (i.e., no INVERTERS are allowed ... inverters must be built with NOR gates), how many QUADNOR ICs would be required? Note - Do not try to simplify or change the expression ...implement it as is.

A. 3
B. 6
C. 2
D. 1
E. 7


Answer: C

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