Which of the following are features of the wobble hypothesis? a) a naturally occurring trna exists in yeast that can read both arginine and lysine codons. b) a trna can recognize only one codon. c) some trnas can recognize codons that specify two different amino acids if both are nonpolar. d) the "wobble" occurs only in the first base of the anticodon. e) the "wobble" occurs only in the third base of the anticodon.