32. 根據2011 IASLC/ATS/ERS classification of adenocarcinoma，”invasive mucinous adenocarcinoma”的特點，下列敘述哪一項正確
(A) Thyroid transcription factor-1 (TTF-1) positivity is uncommon in invasive mucinous adenocarcinoma
(B) CK20 is positive in fewer than 20 percent of invasive mucinous adenocarcinoma
(C) In East Asia, the frequency of EGFR mutations in patients with invasive mucinous adenocarcinoma is higher than the total population of adenocarcinoma
(D) The pathological feature of invasive mucinous adenocarcinoma is adenocarcinoma that produces mucin but lacks the characteristic goblet/columnar cell morphology