The function is
.
The period of the function is
.
The secant function has asymptotes equations:
and
.
Hence the vertical asymptotes are
\
and
.
and 
For finding
-intercepts susbtitute
in
.



oand
and 
and 
The function has
-intercepts at
and
.
Compare with the given graphs.
\The graph
as
-intercepts at
and
.
hence the correct choice is
.
The correct choice is
.