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Which of the following statements are incorrect ?
  1. Plant cells have centrioles which are absent in almost all animal cells.
  2. Ribosomes are the site of protein synthesis.
  3. The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.
  4. In animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum. Of the above statements

A. (i) and (iii)

B. (iii) and (iv)

C. (ii) and (iv)

D. (i) and (iv)

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