Which of the following accurately conveys the Buddha's view about the relationship between serenity/calmness and insight as aspects of meditation practice?
1) Serenity must always be cultivated before there is insight
2) Insight must always be present before there is any serenity/calmness
3) Serenity ordinarily occurs before insight, but due to the differing aptitudes of meditators, insight might occur before serenity/calmness or they might occur together
4) Insight ordinarily occurs before serenity/calmness, but due to the differing aptitudes of meditators, serenity/calmness might occur before insight or they might occur together