Refer to the exhibits.

bash-3.2$ curl -H "Content-Type: application/json" -H "Authorization:
Fj2zzzykEa091ic9GK2j8LtE1HklHklH6oRHPQdw1Pat60i7ndtHHnWzL2b5pqMg14Kk_B9EI59isacLy7-
NaxA02n9H-tGgt-SxQ39iDejgcs" -i -X POST -d "{ \"roomId\":
\"Y2geK53sjEknosrC7SwQ5ZGL99pHgiuScB7DfNvUsr8Xx4wDKLiPORcEkryAnM3QmK9LOZSP0G4\"
,\"text\": \" test2\" }" https://api.ciscospark.com/v1/messages
HTTP/1.1 401 Unauthorized
Via: 1.1 linkerd
TrackingID: ROUTER_5EOFDC8C-EB6F-01BB-00EF-806BF1BD00EF
Date: Sat, 04 Jan 2020 00:30:04 GTM
Server: Redacted
Content-Length: 267
Content-Type: application/json
Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
{"message": "The request requires a valid access token set in the Authorization request
header.", "errors": [{"description": "The request requires a valid access token set in the
Authorization request
header."}] ,"trackingId"a: "ROUTER_5EOFDC8C-EB6F-01BB-00EF-806BF1BD00EF"}
bash-3.2$
A developer is troubleshooting an API with the given API documentation and cURL command. What is the cause of this problem?
WARNING
the answers are mixed, do not specify in the comment number or the letter of the answer
please write answer#A instead A, answer#B instead B...