JEE Main 2025 Physics question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The density of the copper nucleus is greater than that of the carbon nucleus. Reason (R) : The nucleus of mass number A has a radius proportional to . In the light of the above statements, choose the most appropriate answer from the options given below.

• (1)Both (A) and (R) are correct and (R) is the correct explanation of (A)
• (2)(A) is not correct but (R) is correctCorrect
• (3)Both (A) and (R) are correct and (R) is not the correct explanation of (A)
• (4)(A) is correct but (R) is not correct