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let r1=(a+bb)* , r2=(a*+b* ), r3=(aa+b)* which 0f the following is true?

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A)L(r1)⊆L(r2) and L(r3)⊆L(r2)

b) L(r2)⊆L(r1)  and L(r2)⊆L(r3)

C) L(r1)=L(r3)⊆L(r2)

D) L(r1)⋃L(r3)=L(r2)

plz explain with explanation
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plz correct me.....

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