The diagram below shows a consumer's marginal utility (MUMUMU) curve for consuming additional weekly units of a premium streaming subscription.

Based on the diagram and the theory of diminishing marginal utility, which of the following statements is correct?
Between 000 and Q2Q_2Q2 units of consumption, total utility is increasing at an increasing rate.
At consumption level Q2Q_2Q2, total utility is maximised because marginal utility is zero.
Beyond Q2Q_2Q2 units of consumption, total utility is negative because marginal utility is negative.
At consumption level Q3Q_3Q3, average utility must be negative because marginal utility is negative.