1. A={a, b, c, d} and B= {a, b, c,} then;
a. A ⊂ B
b. B ⊆ A
c. B ⊂ A
d. A ⊆ B

2. What is the coefficient of X in the expression y²x + y?
a. y²
b. y
c. 1
d. 0