A student intended to prepare 1000 mL of a 10 ppm solution of $$\text{K}^+$$ from KCl. He made appropriate calculations, weighed the salt accordingly and prepared the solution. However, after making the solution, he realized that the salt he used was $$\text{KNO}_3$$ and not KCl. The concentration of $$\text{K}^+$$ (ppm) in this prepared solution is

A

7.37

B

10.00

C

13.55

D

3.86