Multiplier can be described as
The ratio of change in an endogenous variable to the change spending
The ratio of variables that multiplies autonomous spending plus tax
The ratio of change in output to a change in autonomous spending
The ratio of variables that multiplies autonomous spending
Correct answer is A
A multiplier is a factor of proportionality that measures how much an endogenous variable changes in response to a change in some exogenous variable such as investment, consumption, government expediture etc.