For each of the following nitrogenous base sequences, write the complimentary sequence on the line provided.
a) A – T – C – C – T – A – G – A – A – G – G – T __________
b) C – G – T – T – G – C – A – G – A – A – C – T __________
c) T – A – C – G – G – A – T – C – G – T – C – A __________