please help this is driving me crazy i don't understand chemistry and i'm gonna cry
Q 6 (3 points) Which reaction sequences would give the compound shown as the major product?
SN2
HO
1.PB 2.CHCOONa,DMF
HO
PPh3.DEAD,THF. CHCOOH
OH
1.TsCI.Py 2.CHCOONa,DMF
OH
CHCOOH
IV
a.1.1I
b.1.
C.IIIV
d.III.IV
e.II,I