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74. What type of circuit is shown below and which statement best describes its operation?
(a) It is a two-input CMOS AND gate with open drain.
(b) It is a two-input CMOS buffer with tristate output.
(c) It is a CMOS inverter with tristate output.
(d) It is a hybrid TTL-CMOS inverter with FET totem-pole output.
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