A Typical Blood Serum Concentration Of $\mathrm { HPO } _ { 4 } ^ { 2 - }$

A typical blood serum concentration of $\mathrm { HPO } _ { 4 } ^ { 2 - }$ is 2 meq/L.What is the concentration of this ion expressed in mol/L?

A) 0.001 mol/L
B) 1 mol/L
C) 0.002 mol/L
D) 0.0003 mol/L
E) 0.004 mol/L