Which of the following is not true about Lindahl pricing? It is an idealized but impractical way to determine equilibriu

[answerhappygod]

Which of the following is not true about Lindahl pricing?
It is an idealized but impractical way to determine equilibrium
in a market for public goods.
An obstacle to achieving it is that individuals might be
impelled to conceal their true preferences.
There is unanimous agreement with the equilibrium in the sense
that no individual would be motivated to make a change.
Although marginal cost may not equal marginal benefit for all
individuals, every individual receives a net gain.