The power plant and water desalination units in Doha are currently considering two new systems for the chemical treatment of product water. The interest rate is 12% annually. The alternatives considered are as follows: Compare both alternatives based on incremental present worth Which alternative is more economical? Compare both alternatives based on incremental Future worth Which alternative is more economical? Compare both alternatives based on incremental Annual Equivalent Which alternative is more economical? Compare both alternatives based on incremental IRR Which alternative is more economical