The question provides two statements about Chattisgarh and West Bengal`s area and population and asks which of them are correct.

Option 1 asserts that Chattisgarh is larger than West Bengal in terms of area. This is indeed correct, as Chattisgarh, with an area of about 135,191.5 square kilometers, is larger than West Bengal, which has an area of about 88,752 square kilometers.

Option 2 claims that according to the Population Census of 2001, West Bengal has a larger population than Chattisgarh. This is also true, as the 2001 Census recorded West Bengal`s population to be approximately 8 crores, whereas Chattisgarh had about 2 crores.

Option 3 agrees with both statement 1 and 2, which, as established, are correct.

Option 4 suggests that neither statement is correct, which is incorrect due to the reasons explained above.

Therefore, the correct answer is option 3, which asserts that both the statements are correct.