Consider the following algorithm,

for$($i$=1$; i$<1\mathrm{.}5*$n; i$++)$

system.out,print$($i$)$;

for$($i$=$n; i$>1$; i$--)$

system.out.print$($i$)$;

what is the output when n$=6$

a$.$ none of the above

b$.12345654521$

c$.12345678954321$

d$.12345664321$