A bimetallic strip is made of two strips \( A \) and \( B \), having co-efficient of linear expa...

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A bimetallic strip is made of two strips \( A \) and \( B \), having co-efficient of linear expansion as \( \alpha_{A} \) and \( \alpha_{B} \). If \( \alpha_{A}\alpha_{B} \), which of the following describes the behaviour of the metallic strip when heated ?
(A) It will bend but will not elongate
(B) It will bend the metal \( A \) s the outer side
(C) It will bend with metal \( B \) as the outer side
(D) It will bend only when
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