Can someone help on what I am doing wrong here as it is complaining about command

This question is from Mock Exam -2

Create a pod called multi-pod with two containers.
Container 1: name: jupiter , image: nginx
Container 2: europa , image: busybox
command: sleep 4800

Environment Variables: Container 1: type: planet

Container 2: type: moon
image

try something like this ["/bin/sh","-c",“sleep 4800”]

the validation is expecting the input ["/bin/sh","-c",“sleep 4800”]