A Chemistry Student Attempted to Make a 0

Multiple Choice

A chemistry student attempted to make a 0.2000 M solution of NaCl using a 100.0 mL volumetric flask. She added exactly 100.0 mL of water to the flask, then added 0.02000 mol of NaCl, and found that the total volume in the flask was above the 100.0 mL mark. What was the concentration of the solution?

A) exactly 0.2000 M
B) a bit less than 0.2000 M
C) a bit more than 0.2000 M
D) exactly 0.2002 M
E) There is insufficient information to select one of the above responses.