A cell structure has an actual length of $8\,\mu\text{m}$. Which of the following steps are needed to work out the magnification of an electron micrograph of this cell structure? step 1 measure the image length of the cell structure on the micrograph in centimetres step 2 measure the image length of the cell structure on the micrograph in millimetres step 3 divide the image length by $1000$ step 4 multiply the image length by $1000$ step 5 divide the result by $8$ step 6 multiply the result by $8$
- Asteps 1, 3 and 6
- Bsteps 1, 4 and 6
- Csteps 2, 3 and 5
- Dsteps 2, 4 and 5