k	Ak	pk
1	100	0.10
2	200	0.25
3	300	0.20
4	400	0.25
5	500	0.20

iF in An ExpErimEnt thE proBABilitiEs oF oBtAining thE vAluEs A₁，A₂，A₃，A₄， AnD A₅ArE p₁，p₂，p₃，p₄ AnD p₅，rEspECtivEly，thEn thE ExpECtED vAluE is DEFinED As A₁p₁+A₂p₂+A₃p₃+A₄p₄+A₅p₅．For thE vAluEs AnD thEir CorrEsponDing proBABilitiEs in thE tABlE ABovE，whAt is thE ExpECtED vAluE
A、350
B、320 C、300
D、270 E、250