GKFix MCQ Question

What is the fixed value of the elementary charge used in defining the ampere?

• A. 1.758820×10¹¹ C/kg
• B. 9.109×10⁻³¹ C
• C. 6.242×10¹⁸ C
• D. 1.602176634×10⁻¹⁹ C