The given figure is related with myosin monomer (meromyosis). Identify the parts labelled from A to C and select the correct option .
A. `{:("(A)",(B),(C),),("(Head)",("Cross arm"),("GTP binding sites"),):}`
B. `{:("(A)",(B),(C),),("(Cross arm)",("Head"),(Ca^(+2)"binding sites"),):}`
C. `{:("(A)",(B),(C),),("(Head)",("Cross arm"),("ATP binding sites"),):}`
D. `{:("(A)",(B),(C),),("(Cross)",("Head"),("ATP binding sites"),):}`