The correct option is B
2,3,4
In the given figure we can clearly observe the parallel sides and common base are :
Fig 1 : Same base but not same parallel
Fig 2 : Same base -PQ and between same parallel - PQ & SR
Fig 3 : Same base - BC and between
Same Parallel - BC & AD
Fig 4 : Same base - AB and betweem same parallel - AB & QC
Fig 5 : Same base but not same parallel
Hence, Correct Option is B