Carbonic anhydrase enzyme is present in .........., ……….. and for its activity the enzyme required...... as a cofactor.

Options

A. RBC, pancreatic cell and `Zn^(2+)`
B. Plasma,WBC and `Mn^(2+)`
C. RBC, plasma and `Ca^(2+)`
D. Laukocytes, macrophages and `Zn^(2+)`

Answer

A