107) In the figure above, which structures are identical?
A) All are identical.
B) None are identical.
C) only (1) and (4)
D) only (1), (3), and (4)
108) In the figure above, which are isomers of compound (1)?
A) All are isomers of compound (1).
B) None are isomers of compound (1).
C) only (2) and (3)
D) only (4)
109) In the figure above, which are branched hydrocarbons?
A) All are branched hydrocarbons.
B) None are branched hydrocarbons.
C) only (1) and (4)
D) only (1), (2), and (4)