What is 2{3,b,x} ? Incorrect expression because an exponent should be a number, not a set; (B) Incorrect expression because the set-exponent has mixed numbers and syn (C) { A ,{3,b},{3},{b},{b,x},{x},{3,x},{3,b,x}} (D) {AE,{3},{b},{x},{3,b},{b,x},{3,b,x}} (E) None of the above. What is 2{3,b,x} ? Incorrect expression because an exponent should be a number, not a set; (B) Incorrect expression because the set-exponent has mixed numbers and syn (C) { A ,{3,b},{3},{b},{b,x},{x},{3,x},{3,b,x}} (D) {AE,{3},{b},{x},{3,b},{b,x},{3,b,x}} (E) None of the above