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Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?
A) 5'-purine-pyrimidine-purine-pyrimidine-3' with 3'-purine-pyrimidine-purine-pyrimidine-5'
B) 5'-A-G-C-T-3' with 5'-T-C-G-A-3'
C) 5'-G-C-G-C-3' with 5'-T-A-T-A-3'
D) 5'-A-T-G-C-3' with 5'-G-C-A-T-3'
E) All of these pairs are correct.