Electrophile attacks the followingIn which cases will be meta-position :a)II and IVb)I, II and IIIc)II and III onlyd)I onlyCorrect answer is option 'B'. Can you explain this answer?

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Electrophile

attacks the following

In which cases

will be meta-position :

a)
II and IV
b)
I, II and III
c)
II and III only
d)
I only

Correct answer is option 'B'. Can you explain this answer?

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