Section 3B(3) in The Karnataka State Civil Services (Regulation of transfer of teachers) Act, 2007
(3)A vacancy remaining unfilled in Zone 'B' shall be filled by transfer of a teacher in Zone 'C' on exercise of option and any vacancy still not filled in Zone B may be filled by transfer of teacher in Zone 'A' who are to be transferred compulsorily under sub-section (1) of section 3A]
