下列那種失語症測驗可量化病患的嚴重程度，故常被用來追蹤病人的恢復狀況？①明尼蘇達失語症鑑別診斷測驗（Minnesota Test for Differential Diagnosis of Aphasia, MTDDA）②西方失語症測驗（Western Aphasia Battery, WAB）③波士頓失語症診斷測驗（Boston Diagnostic Aphasia Examination, BDAE）④波契溝通能力指數（Porch Index of Communicative Ability, PICA）