下列何者為真核細胞mRNA 5' capping 的方式？
7-methylguanosine 以5'-to-3' diphosphate linkage 方式結合至mRNA
7-methylguanosine 以5'-to-5' triphosphate linkage 方式結合至mRNA
N ^{6}-methyladenosine 以5'-to-5' triphosphate linkage 方式結合至mRNA
^{6}
O ^{6}-methylguanosine 以5'-to-3' diphosphate linkage 方式結合至mRNA
