How does the presence of double bonds in rubber molecules influence their structure and reactivity?

Options

1. AThe presence of double bonds in rubber molecules results in a highly rigid and inflexible structure.
2. BThe double bonds in rubber molecules increase their susceptibility to degradation by environmental factors.
3. CDouble bonds in rubber molecules provide flexibility and elasticity to their structure and enhance their resis
4. DThe presence of double bonds in rubber molecules has no significant impact on their structure or reactivity.