If the PH of a Solution Is 10,what Is the Hydronium

Multiple Choice

If the pH of a solution is 10,what is the hydronium ion concentration?

A) 1 × 10^-10 M
B) 1 × 10¹⁰ M
C) 10 M
D) -10 M
E) - 1 × 10¹⁰ M