A 68-year-old man presents with acute right-sided weakness and aphasia for 2 hours. CT excludes hemorrhage. According to NICE guidelines, how soon should thrombolysis be administered if the patient is eligible?AWithin 12 hours of onsetBWithin 4.5 hours of onsetCWithin 24 hoursDOnly after MRI confirmationEOnly if symptoms persist beyond 6 hoursCheck my answer