[单选题]
A p-type semiconductd((cx: mtmp p(hm)l)9 nsyug9or /(hcj1g-i juu01jqz;mk5 gghis produced by
A. doping the host crystal with donor impurities.
B. doping the host crystal with accepter impurities.
C. pure crystals of germanium.
D. none of the given answers