A patient being evaluated for aphasia is unable to repeat sentences correctly or to name objects properly.However,the patient's speech is effortless and melodic.There are frequent errors in word choice and obvious difficulties in comprehension.The remainder of the patient's neurologic examination is normal.Damage in which area of the brain would account for this type of aphasia:

• A. Poterior temporal and parietal lobes,dominant hemisphere
• B. Frontal and parietal lobes,dominant hemisphere
• C. Prefrontal and frontal regions,dominant hemisphere
• D. Posterior parietal and temporal lobes,nondominant hemisphere