@a = ("Zero","One","Two");
@b = ("A","B");
$c[0]= \@a;
$c[1]= \@b;
$asize = @a;          # just fine for scalar array
$bsize = @c[1][0];    # but what to do here?
print "Array a size is:       $asize\n";
print "Array b size in c is:  $bsize\n";

# What is syntax to find the size of array b in array c?