Which of the following statements is true? LO2 Which of the following statements is true? LO2 Cash flows that occur at different times can be compared before converting them to the same periods dollars if the interest rate is constant. Cash flows that occur at different times can be compared before converting them to the same periods dollars, but they cannot be combined until they are converted to the same time periods dollars. Cash flows that occur at different times can be added together in any combination before they are converted to the same time periods dollars if the interest rate is constant. Cash flows that occur at different times must first be converted to the same time periods dollar before being compared or combined.