Read the following four statements (A-D) about certain mistakes in two of them
(A) The first transgenic buffalo Rosie produced milk which was human alpha-lactalbumin enriched
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules
(C) Downstream processing is one of the steps of R-DNA technology
(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host
Which are the two statements having mistakes?