How would you increase the processing capacity of a Presto engine in watsonx.data to handle a spike in query load?

Presto engine capacity in watsonx.data is scaled through Infrastructure Manager by adding worker nodes or upgrading the instance size; providing more CPU and memory for concurrent query execution. The incorrect options ("By adding more object storage buckets to the engine's catalog", "By creating additional schemas in the metastore", "By converting Parquet files to ORC format to reduce scan time") are distractors that don't fully capture the concept described.