PCA (Prometheus Certified Associate) sample exam question with answer 210

Question:
Which of the following exporters is BEST for monitoring Java Virtual Machine (JVM) metrics?

1. Node Exporter
2. Blackbox Exporter
3. Java Exporter
4. JMX Exporter

Answer:
D - Prometheus maintains the JMX Exporter that fulfills the described purpose
A - the purpose of Node Exporter is to expose detailed metrics about Linux hosts
B - the pupose of Blackbox Exporter is to expose metrics based on probes such as HTTP, TCP, ICMP, etc
C - this is not the name of a Prometheus-maintained exporter