Given that, Plasmid-A yielded two fragments and Plasmid-B yielded three fragments after digestion with BamHI and analyzed by agarose gel electrophoresis.By observing we can make the following inferences that
1. Plasmid-A has two restriction sites and is circular.
2. Plasmid-B has three restriction sites and is circular.
3. Plasmid-A has two restriction sites and is circular.
4. Plasmid-B has two restriction sites and is linear.
On the basis of inferences choose the correct statement
1 and 2
2 and 3
1 and 4
3 and 4