Assume a biallelic locus in a diploid population. Out of 100 individuals, the following genotypes were observed: 59 A 1 A 1 individuals; 16 A 1 A 2...

Assume a biallelic locus in a diploid population. Out of 100 individuals, the following genotypes were observed: 59 A1A1 individuals; 16 A1A2 individuals; and 25 A2A2 individuals. 

What is the observed (actual; not predicted) allele frequency of the A1 allele?

A.0.59

B.0.67

C.0.16

D.0.25

E.0.33