44.熱聚式假牙基底樹脂以壓縮成型(compression molding)製作,在下列那一個時期最適合做模具塑型?(A)砂狀(sandy)期(B)絲狀(stringy)期(C)糰狀(doughlike)期(D)膠狀(rubbery or elastic)期