Which one of the following is a correct statement?
- A$Bt$ in '$Bt$ cotton' indicates that it is a genetically modified organism produced through biotechnology
- BSomatic hybridization involves fusion of two complete plant cells carrying desired genes
- CThe anticoagulant hirudin is being produced from transgenic $Brassica$ $napus$ seeds
- DFlavr $savr$ variety of tomato has enhanced the production of ethylene,which improves its taste
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$B$. Two bodies of equal mass suffering a head-on elastic collision merely exchange their velocities.
$A$. In an elastic collision,if a body suffers a head-on collision with another of the same mass at rest,then the first body comes to rest while the other starts moving with the velocity of the first one.
$B$. Two bodies of equal mass suffering a head-on elastic collision merely exchange their velocities.
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