The PH of a Solution with [H₃O⁺] = 5

Multiple Choice

The pH of a solution with [H₃O⁺] = 5.9 × 10^-3 M,to the correct number of significant figures,is

A) 5.9 × 10^-3.
B) 2.2.
C) 2.23.
D) 1.01.
E) 2.229.