Which of the following properties are associated with the state transition matrix \(\phi(t)\) ?
1. \(\phi\left(t_{1} / t_{2}ight)=\phi\left(t_{1}ight) \cdot \phi^{-1}\left(t_{2}ight)\)
2. \(\phi(-t)=\phi^{-1}(t)\)
3. \(\phi\left(t_{1}-t_{2}ight)=\phi\left(-t_{2}ight) \cdot \phi\left(t_{1}ight)\)

Select the correct answer using the codes given below:
(a) 1, 2 and 3
(b) 1 and 2
(c) 2 and 3
(d) 1 and 3