JEE Main 2018 Chemistry question

Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations. pH of which one of them will be equal to 1 ?

• (A)55 mL HCl + 45 mL NaOH
• (B)75 mL HCl + 25 mL NaOHCorrect
• (C)100 mL HCl + 100 mL NaOH
• (D)60 mL HCl + 40 mL NaOH