4. Which of the following is a contrast orthogonal to both 1 = 1 2 and 2 = 1 +2 23?

a) 3 = 3 4 b) 3 = 1 + 2 c) 3 = 1 + 2 + 3 34

d) 3 = 1 + 2 3 4

e) 3 = 1 4

Please solve correct option clearly otherwise I will give And also explain incorrect options.