A namespace 'dev' has a ResourceQuota that sets 'requests.cpu: 4' and 'limits.cpu: 8'. A pod is created with a container that has 'resources.requests.cpu: 1' and 'resources.limits.cpu: 3'. However, the pod remains in Pending state. The output of 'kubectl describe quota -n dev' shows 'used requests.cpu: 3.5' and 'used limits.cpu: 7'. What is the most likely reason the pod is pending?