Direction: In each of the questions, a sentence is given which has an underlined part. Select the best replacement for the underlined phrase from the given options.
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The low-cost Mars mission craft of India, which ISRO successfully placed in the Martian orbit a year back in September 2014, is now expected to last longer than previously expected because of the fuel it has been able to save
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- which ISRO successfully placed in the Martian orbit a year back in September 2014.
- which ISRO had successfully placed in the Martian orbit a year back in September 2014.
- which ISRO could successfully placed in the Martian orbit a year back in September 2014.
- which ISRO successfully placed in the Martian orbit a year back on September 2014.
Correct Option: B
