5. What is the major product of the following reaction?
[tex]\longrightarrow \underset{\mathrm{TosCl} \text {, Pyridine }}{\longrightarrow}[/tex]
a.
b.
c.
d.
CC=Cc1ccccc1
C=CCc1ccccc1
CC(C)(O)Cc1ccccc1
CC(C)(O)Cc1ccccc1