Solve the Problem $\mathrm { pH }$ Of a Solution Ranges from 0 to 14

Multiple Choice

Solve the problem.
-The $\mathrm { pH }$ of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by $\mathrm { pH } = - \log \mathrm { x }$ where $\mathrm { x }$ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the $\mathrm { pH }$ if the hydrogen ion concentration is $1 \times 10 ^ { - 3 }$ .

A) 3
B) 11
C) $- 3$
D) $- 11$