A、CErtAin lAB ExpErimEnts with whitE AnD Brown miCE only. in onE ExpErimEnt, 2/3 oF thE miCE ArE whitE. iF thErE ArE 13 Brown miCE in thE ExpErimEnt, how mAny miCE in totAl ArE in thE ExpErimEnt
A、39
B、33
C、26
D、21
E、10