What should be done to unused inputs on TTL gates?

[A].	They should be left disconnected so as not to produce a load on any of the other circuits and to minimize power loading on the voltage source.
[B].	All unused gates should be connected together and tied to V through a 1 k resistor.
[C].	All unused inputs should be connected to an unused output; this will ensure compatible loading on both the unused inputs and unused outputs.
[D].	Unused AND and NAND inputs should be tied to VCC through a 1 k resistor; unused OR and NOR inputs should be grounded.

Answer: Option D

Explanation:

No answer description available for this question.