23. 下列那一腺體的管腔中,在老年人會有鈣化的澱粉樣體(corpora amylacea)出現?(A)攝護腺(prostate gland)(B)貯精囊(seminal vesicle)(C)尿道球腺(bulbourethral gland)(D)尿道腺(urethral gland)