The chemical formula for carbonic acid, a compound used in carbonated drinks, is H2CO3. Assume that these symbols represent the three elements of this compound:

Three atoms, grey represents carbon, red represents oxygen and white represents hydrogen

Which picture correctly represents carbonic acid?

A.
Molecule structure has five atoms connected in a straight line using single bond in order of white atom, red atom, grey atom, red atom and white atom. The grey atom in center is connected to a red atom in double bond
B.
Molecule structure has five atoms connected in a straight line using single bond in order of Red atom, white atom, grey atom, white atom and red atom. The grey atom is connected to a white atom in double bond
C.
Molecule structure has five atoms connected in a straight line using single bond in order of Red atom, white atom, grey atom, white atom and red atom. The grey atom is connected to a white atom in double bond
D.
Molecule structure has five atoms connected in a straight line using single bond in order of Red atom, grey atom, white atom, grey atom and red atom. The white atom in center is connected to grey atom in double bond