If the mRNA sequence is AUGGCAAGAAAA it means that the triplet codons are AUG GCA AGA AAA.
AUG codes for the methionine (start codon) - Met
GCA codes for the alanine – Ala
AGA codes for the arginine – Arg
AAA codes for the lysine – Lys.
Im not 100% sure more like 37% but i think its D i was looking on the internet for some while thats the closest i got so sorry if im wrong
I believe it's B. That would be the best guess