A. Select the appropriate log group. Create a CloudWatch metric filter with “ERROR” as the search term. Create an alarm on this metric that notifies the SNS topic when the metric is 1 or higher.
B. In CloudWatch Logs Insights, select the appropriate log group. Create a metric query to search for the term “ERROR” in the logs. Create an alarm on this metric that notifies the SNS topic when the metric is 1 or higher.
C. Select the appropriate log group. Create an SNS subscription filter with “ERROR” as the filter pattern. Select the SNS topic as the destination.
D. Create a CloudWatch alarm that includes “ERROR” as a filter pattern, a log group dimension that defines the appropriate log group, and a destination that notifies the SNS topic.