The diagram below shows the demand and supply curves for new houses.
The initial demand and supply are D$_1$ and S$_1$. Other things being equal, which one of the following combination of events is most likely to cause demand and supply to shift to D$_2$ and S$_2$?

A fall in mortgage interest rates and a relaxation of planning restrictions
2 )
A fall in the price of new homes and a fall in the productivity of construction workers
3 )
A fall in the price of rented accommodation and a fall in the price of raw materials
4 )
A rise in incomes and a rise in wages of construction workers
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