Which Solution Has the Same Number of Moles of NaOH

Multiple Choice

Which solution has the same number of moles of NaOH as 50.0 mL of 0.100 M solution of NaOH?

A) 20.0 mL of 0.200 M solution of NaOH
B) 25.0 mL of 0.175 M solution of NaOH
C) 30.0 mL of 0.145 M solution of NaOH
D) 50.0 mL of 0.125 M solution of NaOH
E) 100.0 mL of 0.0500 M solution of NaOH