Assume that today is 31.12.2018. Calculate the present value (i.e. the value on 31.12.2018) of the following alternative

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Assume that today is 31.12.2018. Calculate the present value
(i.e. the value on 31.12.2018) of the following alternatives given
an discount rate of 7% (compounded annually).
Alternative A contains two cashflows. €60 today and €60 on the
31.12.2022.
Alternative B is a perpetuity of €12 each year. The first
cashflow occurs today. The remaining cashflows occurs at the end of
each year, i.e, the second cashflow occurs on the 31.12.2019, the
third on 31.12.2020, etc.
Alternative C is an annuity. The first cashflow occurs on the
31.12.2019, the final cashflow occurs on 31.12.2030. Free cash flow
equals €60.
Alternative D is a growing perpetuity, that grows by 2% each
year. The first cashflow occurred on 31.12.2017.Free cash flow
equals €60.