Vegetations on undersurface of A.V. valves are found in:
Answer is B (Libman Sacks Endocarditis) Vegetation on under-surface of AV valves are typically seen in Libman Sacks Endocarditis (SLE).
Acute Rheumatic corditis
Limban Sack's endocarditis
Non thrombotic bacterial endocarditis
Chronic rheumatic carditis