Context: Also , if he were to clean the interior first , he wud hafta remove the body kits and put them aside as the interior is the hardest part of any vehicle wash , having to remove oil , dirts , grease and what - nots . Soon , he stepped up to do the spray job first . Everything seemed well as he was left to spray the finished smooth surface . He began spraying right under the sun .

Question: Why does he feel that he must perform the spray job while the sun beats down ?
Options:
0. None of the above choices .
1. The sun assists in warming the paint so it is easy to apply
2. The sun keeps the paint from spilling off the car
3. The sun dries the paint which is sprayed on quickly
Answer: 3