In aerodrome planning, what does the term 'TODA' represent, and how is it calculated?

1. Take-Off Distance Available; it is the length of the Take-Off Run Available (TORA) plus the length of the clearway.
2. Take-Off Distance Available; it is the length of the runway plus the length of the stopway.
3. Total Obstacle Clearance Distance; it is the minimum height required to clear all trees near the runway.
4. Total Operational Departure Area; it is the physical area of the terminal apron.