The 4-point discrete Fourier Transform (DFT) of a discrete time sequence {1, 0, 2, 3} is

{0, -2 + 2j, 2, -2 - 2j}
{2, 2 + 2j, 6, 2 - 2j}
{6, 1 - 3j, 2, 1 + 3j}
{6, -1 + 3j, 0, -1 - 3j}

The correct answer is $\boxed{\text{C}}$.

The 4-point DFT of a discrete time sequence $x[n]$ is given by

$$X[k] = \sum_{n=0}^{3} x[n] e^{-j2\pi nk/N}$$

where $N$ is the number of samples in the sequence. For the sequence $x[n] = {1, 0, 2, 3}$, we have

$$X[0] = \sum_{n=0}^{3} x[n] = 1 + 0 + 2 + 3 = 6$$

$$X[1] = \sum_{n=0}^{3} x[n] e^{-j2\pi n/4} = 1 – 0 + 2e^{-j\pi} + 3e^{-j3\pi} = 2 – 2j$$

$$X[2] = \sum_{n=0}^{3} x[n] e^{-j4\pi n/4} = 1 – 0 + 2e^{-j2\pi} + 3e^{-j4\pi} = 2 + 2j$$

$$X[3] = \sum_{n=0}^{3} x[n] e^{-j6\pi n/4} = 1 – 0 + 2e^{-j3\pi} + 3e^{-j5\pi} = 0 – 2j$$

Therefore, the 4-point DFT of $x[n]$ is $\boxed{\text{C}}$.

Option A is incorrect because $X[1]$ should be $2 – 2j$, not $0 – 2j$.

Option B is incorrect because $X[2]$ should be $2 + 2j$, not $2 – 2j$.

Option D is incorrect because $X[3]$ should be $0 – 2j$, not $-1 – 3j$.

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