After the successful testing of vaccine safety on transgenic mice,which animal is used for this testing?

Read the following four statements $(A-D)$ and identify the mistakes in two of them.
$(A)$ The first transgenic cow,Rosie,produced milk which was human alpha-lactalbumin enriched.
$(B)$ Restriction enzymes are used in the isolation of $DNA$ from other macromolecules.
$(C)$ Downstream processing is one of the steps of $rDNA$ technology.
$(D)$ Disarmed pathogen vectors are also used in the transfer of $rDNA$ into the host.
Which of the two statements have mistakes?

What was the name given to the first transgenic cow?

The first transgenic cow was developed in the year:

$ANDI$ is a cloned:

When scientists make an animal superior by view of genotype,by introducing some foreign genes into it,the phenomenon is called: