CUET Mathematics - The two lines given by r = (i + 2j + 3k) + (i - j + k) and r = (2i - j - k) + (-i + j - k) A. are perpendicular B. are parallel. C. have shortest distance 0. D. have shortest distance sqrt(26). E. have shortest distance sqrt(78). Which of the above statements are true? Choose the correct answer from the options given below: | PYQs + Solutions | AfterBoards