When a celsius thermometer reads 90°C a faulty Fahrenheit thermometer reads 190°F. The correction to be made in the latter scale is

When a celsius thermometer reads 90°C a faulty Fahrenheit thermometer

1.	When a celsius thermometer reads 90°C a faulty Fahrenheit thermometer reads 190°F. The correction to be made in the latter scale is
Answer» `+2^(@) F` `- 2^(@) F` `-4^(@) F` `+ 4^(@) F` ANSWER :D