שאלה | How does single-bit parity checking differ from two-dimensional parity checking?

How does single-bit parity checking differ from two-dimensional parity checking?

		Single-bit parity can only detect errors, while two-dimensional parity can both detect and correct single-bit errors.
		Single-bit parity can only detect single-bit errors, while two-dimensional parity can detect and correct single-bit errors.
		There is no difference, they are the same error detection mechanism.
		Single-bit parity is used for data, while two-dimensional parity is used for headers.