Fundamental of Computer science. Please just answer the Right one, no need describe. Thank You.

= 29. The following statements that cannot create a dictionary are A. dict1 {} B. dict2 = { 3: 5 } C. dict3 = {[1, 2, 3]: "uestc" } D. dict4 = {(1, 2, 3): "uestc" } 15. Fiber optics have the advantage of A. being cheaper to install than twisted wire B. being easier to install than twisted wire c. having little interference D. using direct line-of-sight