If $l_1 = \lim_{x \rightarrow 2^{+}} (x + [x])$,$l_2 = \lim_{x \rightarrow 2^{-}} (2x - [x])$ and $l_3 = \lim_{x \rightarrow \pi/2} \frac{\cos x}{x - \pi/2}$,then:
- A$l_1 < l_2 < l_3$
- B$l_2 < l_3 < l_1$
- C$l_3 < l_2 < l_1$
- D$l_1 < l_3 < l_2$
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