Read the following statements.
(a) Ribosomes are larger than that of cytoplasmic ribosomes.
(b) Two membranes have their own specific enzymes.
(c) Matrix has single stranded, circular, naked DNA molecule.
(d) Number is variable depending on the physiological activity of the cell.
(e) Inner membrane forms a number of infoldings called cristae towards the matrix.
How many of the above are correct for the power house of the cell?