In the table shown below, column-II shows the possible outcomes to the water level of a swimming pool when a person standing on a boat in it does any one of the actions shown in column-I

	Column-I		Column-II
i.	He throws a 20 kg iron anchor from the boat into the water, which then settles at the bottom (${\mathrm{\rho }}_{\mathrm{iron}} > {\mathrm{\rho }}_{\mathrm{water}}$)	p.	It becomes lower
ii.	He throws out a 20 kg log of wood from the boat. The log floats on water (${\mathrm{\rho }}_{\mathrm{wood}}< {\mathrm{\rho }}_{\mathrm{water}}$)	q.	It becomes higher
iii.	He empties 20 kg of water from the boat into the pool.	r.	It says the same
iv.	He drinks some water from the pool.	s.	Cannot be predicted from the information given

Now match the given columns and select the correct option from the codes given below.

Codes