Assume the equivalence partitioning of input X is: 1 to 10; 11 to 20, 21 to 30 and the equivalence partitioning of input y is: 1 to 5; 6 to 10; 1;15, and 16 to 20. The following figure represents 30 20 10 Y 1 10 15 20 Select one: a. Strong normal Equivalence testing b. Weak normal Equivalence testing O c. Weak Robust Equivalence testing O d. Strong Robust Equivalence testing