Consider the following statements:

A. The addition of HBr to unsymmetrical alkenes is Markovikov additiion.
B. In the presence of peroxides. Anti-Markovnikov product is formed.
C. $$E_{2}$$ elimation at bridgehead position is easy to occur.
D. $$S_{N}2$$ reaction at vinylic position is difficult to occur.
Choose the correct statements from the options given below:

A

A,B and C only

B

A and D only

C

B and D only

D

A, B and D only