Consider the line-angle structure shown below:

(1) Identify the total number of carbon atoms.
(2) Label each carbon (use a through l).
(3) Determine the number of hydrogens at each carbon atom.
(4) Provide the condensed structural formula.

• A. (1) 12 carbons(2)(3)• Carbons a, f, j, k, and l: three hydrogens each• Carbons b, d, and e: two hydrogens each• Carbons c, g, and h: one hydrogen each• Carbon i: no hydrogens(4)
• B. (1) 12 carbons(2)(3)• Carbons a, f, j, k, and l: three hydrogens each• Carbons b, d, and e: two hydrogens each• Carbon c: one hydrogen• Carbons g, h, and i: no hydrogens(4)
• C. (1) 10 carbons(2)(3)• Carbons a, f, h, i, and j: three hydrogens each• Carbons b, d, and e: two hydrogens each• Carbons c and g: one hydrogen each(4)
• D. (1) 10 carbons(2)(3)• Carbons a, f, h, i, and j: three hydrogens each• Carbons b, d, and e: two hydrogens each• Carbons c and g: no hydrogens(4)

Answer: (B)