Which of the statements below about RTI's standard protocol approach is true? It is reserved for use in Tier 1, whereas in Tier 2 the problem-solving approach or the standard protocol approach may be used. It should only go beyond 10 weeks if the majority of students are still below their short-term goals. It requires that all students receiving Tier 2 be grouped homogeneously so particular skills (e.g., reading fluency, phonemic awareness) can be focused on more efficiently. It provides all students receiving Tier 2 with the same, empirically validated intervention. NEXT