Read the following four statements $(1-4)$ about certain mistakes in two of them

$1.$ The first transgenic buffalo, Rosie produced milk which was human alphalactal albumin enriched.

$2.$ Restriction enzymes are used in isolation of $DNA$ from other macro-molecules.

$3.$ Downstream processing is one of the steps of $R-DNA$ technology.

$4.$ Disarmed pathogen vectors are also used in transfer of $R-DNA$ into the host.

Which are the two statements having mistakes?

  • [AIIMS 2015]
  • A

    Statement $2$ and $3$

  • B

    Statement $3$ and $4$

  • C

    Statement $1$ and $3$

  • D

    Statement $1$ and $2$

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