someone will buy land with 3 payment options as follows:

1. paid in cash at this time of 1.75 billion rupiah 2. Paid in the next 3 years of 2.5 billion rupiah 3. paid installments with installments for the first year of 500 million rupiah, the second year of 750 million rupiah, and the third year of 1 billion rupiah (paid at the end of the year)

if deposit interest is assumed to be 15% per year, which of the above payment methods is chosen? if the nature of land investment is neglected.