16) For the following reaction sequence, what are the correct structures of products A through D?
OH
Br
(CH₃)₃SiCl
(CH₃CH₂)₃N
A
Mg/ ether
B
1. O
2. Hâ‚‚O
C
TBAF
D
OSi(CH₃)₃
Br
I
OSi(CH₃)₃
MgBr
II
OSi(CH₃)₃
HO
III
OH
HO
IV
A) A is I, B is II, C is III, and D is IV
B) A is II, B is I, C is VI, and D is III
C) A is IV, B is II, C is III, and D is I
D) A is III, B is II, C is IV, and D is I
E) A is I, B is III, C is II, and D is I