a$.$ Tesla reports several sources of revenue. How should revenue be recognized for each of these business activities?

Revenue Item Classification

Automotive leasing revenue Answer $1$

Automotive regulatory credits Answer $2$

Automotive sales Answer $3$

Energy generation $-$ Equipment Answer $4$

New car warranty Answer $5$

Service on vehicle $($i$.$e$.$ oil change$)$ Answer $6$

Subscriptions$/$future software updates Answer $7$