Consider the following statements regarding Sangam Age and choose the correct options from the alternatives given below:
Statement I : Puhar became important city for foreign trade.
Statement II : Gold, horses and sweet wine were the chief imports.
1. Both statements are individually true and Statement II is the correct explanation of Statement I.
2. Both statements are individually true but Statement II is not the correct explanation of Statement I.
3. Statement I is true but Statement II is false.
4. Statement I is false but Statement II is true.