Consider the following statements and choose the correct answer:
1. It is in the sedimentary rocks that fossils are found
2. Sedimentary rocks arise as a result of gradual deposition of silt or silica at the bottom of lakes or seas
3. Igneous rocks are those in which the original structure has been changed by heat or pressure
4. Entire plants or animals or more commonly their parts are found fossilised

A. Only 1, 2 and 3 are true

B. Only 1, 2 and 4 are true

C. Only 3 and 4 are true

D. 1, 2, 3 and 4 are true

Answer: Option B