Exam PDII Topic 1 Question 128 Discussion

A company requires an external system to be notified whenever an account is updated.
trigger AccountTrigger on Account (after update){ for (Account
updatedAccount:Trigger.new){ AccountTriggerHelper.notinyxternalSystem
(updatedAccount.id); } } public class AccountTriggerHelperfuture(callout=true)
{ public static void notinyxternalSystem(Id accountId){ Account acc = [Select id, name from Account where accountId = :accountId]; http objectHttp h = new Http(); HttpRequest req = new HttpRequest(); req.setEndpoint('http://example.org/ restService'); req.setMethod('POST'); req.setBody(JSON.serialize(acc)); HttpResponse res = h.send(req); } } What LimitException could the following code trigger?