Q: 69 (CAPF/2015)

Under which of the following condition(s) the occluded fronts are created ?
1. When the front remains stationary
2. When cold air mass moves to warm air mass
3. When warm air mass moves to cold air mass
4. When an air mass is fully lifted above the land surface
Select the correct answer using the code given below :
question_subject: 
Geography
question_year: 
2015
question_exam: 
CAPF
stats: 
0,304,352,88,136,128,304