A trainee calculates the net interest of a defined benefit plan for the year. Which of his steps is wrong?Your answerAI calculate interest income on assets at 6% (expected return) and interest on the obligation at 3.5%.BI apply the discount rate set at the start of the annual period to the net liability determined at the start of the same period.CI adjust the net liability base for contributions and benefits paid during the period, when they change that net liability.DI calculate net interest directly on the net liability, with the discount rate, rather than with two separate rates for the obligation and the assets.SubmitHint