Appellant was convicted of violating the Georgia Controlled Substances Act (Code Ann. Ch. 79A-8, Ga. L. 1974, p. 221 et seq.) by selling LSD. Her sole enumeration of error is that the evidence was insufficient. A review of the record and transcripts shows that the state's witnesses swore that appellant was involved in a sale of LSD to undercover agents. Appellant's evidence was that she did not. Questions of credibility are for the jury. Harris v. State, 155 Ga. App. 530 (271 SE2d 668)
. The jury in this case obviously resolved that issue adversely to appellant. The evidence was sufficient to authorize any rational trier of fact to find appellant guilty beyond a reasonable doubt of the crime charged. Jackson v. Virginia, 433 U. S. 307 (99 SC 2781, 61 LE2d 560).