Comprehension:The following detailed list shows the results of a survey where $1500$ people exiting voting booths were asked for which party they voted:Party A: $175$ votesParty B: $240$ votesParty C: $375$ votesParty D: $300$ votesParty E: $150$ votesParty F: $120$ votesParty G: $140$ votesWhat is the ratio of voters of party D to voters of party G?

1. A
   7:12
2. B
   15:8
3. C
   12:7
4. D
   8:15