The diagram shows the structure of glucose, a molecule that organisms make and use. The structural formula of glucose, C6H1206, shows a ring of 5 carbon atoms and 1 oxygen atom. 4 carbons in the ring are each bonded to an -H and an -OH group in addition to 2 neighboring atoms in the ring. The fifth carbon is bonded to a CH2OH group.

In glucose, each carbon forms how many bonds, and of what type?

A. one hydrogen bond
B. one hydroxyl bond
C. one hydrogen and three covalent bonds
D. four ionic bonds
E. four covalent bonds