Question about the triangulation of surfaces

Feb 2011
For the following simplicial triple system K,


decide whether the following properties is true or not. Justify your answer

(a) T1 is the triangulation of a surface
(b) T1 is a regular triangulation
(c) T1 is the triangulation of a sphere
(d) T1 is triangulation that has an orientation
(e) T1 is isomorphic to the simplicial triple complex T2={125,126,134,137,146,157,236,237,245,247,345,356,467,567}

Thaaaaaaank you in advance(Bow)