$\text { The following distribution is not a probability distribution }$

Multiple Choice

$\text { The following distribution is not a probability distribution }$ because
$\begin{array}{|l|c|c|c|c|c|}\hline \mathrm{x} & -5 & -4 & -3 & -2 & -1 \\\hline \mathrm{P}(\mathrm{x}) & 0.18 & 0.26 & -0.21 & 0.46 & 0.31 \\\hline\end{array}$

A) A values of x is negative
B) A probability is negative
C) The probability values do not add to 1
D) The probability values are not discrete