The correct option is A Singapore
The Singapore government will impose a carbon tax from 2019 to cut its greenhouse gas emissions and make companies more competitive as global agreements on climate change take effect. According to government, the tax would be levied on all facilities producing 25,000 tonnes or more of greenhouse gas emissions a year. The tax, to be applied to all sectors, will be Sg5.0(3.8) per tonne of greenhouse gas emissions from 2019 to 2023, after which the levy will be reviewed and possibly raised to between Sg10andSg15 per tonne by 2030.