Which of the following group of codons is called stop codons?

In a $125$ amino acid sequence,if the codon for the $25^{\text{th}}$ amino acid is mutated to $UAA$,then:

How did the genetic code come into existence?

Match List-$I$ with List-$II$ and select the correct option:

List-$I$	List-$II$
$(p)$ $UUU$	$(1)$ $Pro$
$(q)$ $AAA$	$(2)$ $Gly$
$(r)$ $CCC$	$(3)$ $Phe$
$(s)$ $GGG$	$(4)$ $Lys$

The genetic code was deciphered by chemical synthesis of trinucleotides by:

Statement $I :$ The codon $'AUG'$ codes for methionine and phenylalanine.
Statement $II :$ $'AAA'$ and $'AAG'$ both codons code for the amino acid lysine.
In the light of the above statements,choose the correct answer from the options given below.