Analog information can be converted into digital data using techniques such as PCM (pulse code modulation). Select the correct statement(s).

		a. in order to convert an analog signal that consists of an infinite number of values, it must be sampled using the Nyquist sampling theorem
		b. digitized analog signals always experience quantization loss
		c. signal aliasing is experienced when sampling falls under the recommended Nyquist sampling rate
		d. all of the above are correct