Read the following context and choose the best option to answer the question.
Context: They are probably the hardest modules we have in the radios so it would not be good to have him miss those . Yesterday we stayed late and repaired a radio in the lab . The thing was giving us fits and basically all it needed was an alignment but it was not cooperating at all . The data alignments are pretty critical and must be done exactly right .
Question: What may I , be studying ?
Options: 
A. Music
B. History
C. None of the above choices .
D. Electronic engineering


D