_____________ first proposed the theory of diminishing marginal utility
Marshall
HH Gossen
Krugman
None of these
The sum of satisfaction a person derives from consuming a commodity is _______.
Marginal utility
average utility
total utility
some utility
When total utility is increasing at a decreasing rate, then marginal utility would be ___________.
Increasing but positive
Decreasing but negative
Decreasing but positive
Any of these