Which of the following is true about tRNA?
◦ All tRNAs have a CCA sequence at the 5'-end.
◦ All tRNAs have a CAC sequence at the 3'-end.
◦ All tRNAs have a CCG sequence at the 5'-end.
◦ All tRNAs have a CCA sequence at the 3'-end.
◦ All tRNAs have a CCG sequence at the 3'-end.