Directions: The given sentence is divided into four parts A, B, C, and D. Choose the part that contains an error as your answer. If the sentence is error-free, mark 'No error' as your answer.

ISRO Chairman, S. Somanath said, “If all the sensors failed, (A) we will still be able to land, provided that the propulsion system works (B) because that’s how the design has been made, all the systems are more robust, (C) and we have changed the guidance design and introduced newer algorithms." (D)