Final answer:
The claim that the actual MARR is the real MARR plus an adjustment for inflation is false. The actual MARR that includes inflation is known as the nominal MARR, not the real MARR.
Step-by-step explanation:
The statement that the 'actual MARR is the real MARR plus an upward adjustment that reflects the effect of inflation' is false. MARR stands for the Minimum Acceptable Rate of Return, which is a benchmark that investors and companies use to decide whether to pursue a project or investment. The real MARR refers to the rate of return that takes into account the time value of money but does not include the effect of inflation. The nominal MARR, on the other hand, is the real MARR that includes an upward adjustment to account for inflation. This ensures that the rate of return reflects both the time value of money and the decrease in purchasing power of money over time due to inflation.