48) Having the following information about two materials: - Material (1): Branched and isotactic polystyrene with a weight-average degree of polymerization of 4000 . - Material (2): Linear and isotactic polypropylene with a weight-average degree of polymerization of 7500 . Circle the most correct answer: a) Material (1) is expected to have higher melting temperature because it has a bulkier side group, and a lower weight-average degree of polymerization. b) Material (2) is expected to have higher melting temperature because it has a less bulkier side group, and a higher weight-average degree of polymerization. c) Material (1) is expected to have the same melting temperature as Material (2). d) Not enough information is given to expect which of the two materials have the higher melting temperature