Which of the following is possible?

 $a+\frac{1}{a}\ge 2 or \le -2; \sin \theta and \cos \theta range is\left[-1,1\right]$

$1+p^2\ge 1-p^2; sec\theta can not be less than 1$

 range of $\tan \theta$is set of real numbers

$\therefore$option B is true