Present perfect simple or continuous

Greetings,
I would be grateful if anyone could explain this solution of an English exercise, where you're supposed to use either present perfect simple or continuous:

'As you know, I ___ (take) a course in journalism. I'm still enjoying it but I haven't had any free time recently because of exams and a part-time job.'

Supposedly, the answer ought to be 'have taken', which is quite surprising to me.

As far as I know, the present perfect simple tense should be used to show the result of something whilst the present perfect continuous emphasizes the progress?
Ergo, wouldn't it be much better to apply 'have been taking', since the sentence 'I'm still enjoying it' indicates that his course hasn't finished (i. e. he still takes it)?

Thanks in advance!