##### 40. The output F in the digital logic circuit ...

40. The output F in the digital logic circuit shown in the figure is

(D) $F=\overline X \overline Y \overline Z+XYZ$

(A) $F=\overline XYZ+X\overline YZ$

(B) $F=\overline XY\overline Z+X\overline Y Z$

(C) $F=\overline {XY} Z+XY Z$

Hint:

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