Production of a human protein in bacteria by genetic engineering is possible because

Question

$\begin{array}{1 1} (a)\;\text{ The human chromosome can replicate in bacterial cell } \\ (b)\; \text{ The mechanism of gene regulation is identical in humans and bacteria} \\ (c)\;\text{ Bacterial cell can carry out RNA splicing reactions} \\ (d) \;\text{ The genetic code is universal} \end{array}$