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Which of the following statements is TRUE.

  1. The cascade of a non-causal linear time invariant $\text{(LTI)}$ system with a causal $\text{LTI}$ system can be causal.
  2. If $h[n] \leq 2$ for all $n$, then the $\text{LTI}$ system with $h[n]$ as its impulse response is stable and causal.
  3. If the impulse response $h[n]$ of a $\text{LTI}$ system is of finite duration then the $\text{LTI}$ system is stable and causal.
  4. With $h[n]=3^{n} u[-n+10]$, where $u[n]=1, n \geq 0, u[n]=0, n<0$, the $\text{LTI}$ system is stable.
  5. Both $(c)$ and $(d)$.
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