If the probability distribution of a random variable X is as follows, then $\mathrm{k}=$ \begin{array}{|c|c|c|c|c|}\hline \boldsymbol{X}=\boldsymbol{x} & 1 & 2 & 3 & 4 \\\hline \boldsymbol{P}(\boldsymbol{X}=\boldsymbol{x}) & 2 k & 4 k & 3 k & k \\\hline\end{array}

• Correct answer
  A

  $\frac{1}{10}$
• B

  $\frac{2}{10}$
• C

  $\frac{3}{10}$
• D

  $\frac{4}{10}$

Hence, the correct answer is option: 'A'.