MULTIPLE CHOICES: Write the letter of the best answer on the blank before each item. 1. What refers to the objects in a set? a. set b. braces c. elements d. ellipsis 2. Which among the following sets is written CORRECTLY? a. A = {1, 2, 3, 4) C. A = {A, D, C, D} b. a = {a,b,c} d. none of the above 3. Given A = {s, e, a, t} and B = {s, t, a, n, d}. Find AUB. a. {e, s, t, a, n, d} b.{a, f} c. {n, d} d. {s, t, a, n} 4. Given F = {0, r, a, n, g, e) and G = {b, I, U, e). Find FNG. a. {b, I, u} b.{o,r,a, n, g, e, b, 1} C. {e} d. {b, e, n} ​