Split 1: Parallelism
Notice that the sentence is reported speech. In an interview, rebels estimated that .... and .... Here, "and" is included in underlined part. So eliminate A,B,C. now between D and E, "they had" is the correct tense. We might not know whether they have same artillery now. We just read it as a message. So "they had" is correct. Correct Option D.
Split 2: were vs had
Again, this is reported speech. Rebels are being interviewed. They have estimated
...
Notice that the sentence is reported speech. In an interview, rebels estimated that .... and .... Here, "and" is included in underlined part. So eliminate A,B,C. now between D and E, "they had" is the correct tense. We might not know whether they have same artillery now. We just read it as a message. So "they had" is correct. Correct Option D.
Split 2: were vs had
Again, this is reported speech. Rebels are being interviewed. They have estimated
...





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