A euthanasia system's microcontroller uses SPI (Serial Peripheral Interface) to communicate with a gas flow sensor. Which of the following correctly describes SPI communication?
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A
Single-wire, half-duplex, no clock signal
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B
Four-wire, full-duplex, synchronous with a shared clock
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C
Two-wire, half-duplex, with address-based device selection
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D
Three-wire, asynchronous, using start and stop bits