Find out the number of following orders which are correct against the mentioned properties:
(a) `H_(2) lt D_(2) lt T_(2) " " ("Number of protons")`
(b) `H_(2) lt D_(2) " " ("Bonding energy")`
(c) `H_(2) lt D_(2) lt T_(2) " " ("Boiling point")`
(d) `H_(2) lt D_(2) lt T_(2) " " ("Number of neutrons")`