The marginal propensity to consume (MPC) is the fraction of additional income that is spent

The demand curve for a particular good indicates the various quantities

a. demanded at various prices, other things equal b. demanded at different income levels, other things equal c. actually purchased at various prices, other things equal d. actually purchased at different income levels, other things equal e. demanded at various prices and income levels, other things equal

Explain how the relative magnitudes of changes in supply and demand can affect equilibrium price and quantity, if supply and demand change simultaneously

Please provide the best answer for the statement.