Concept: The question tests on the application of Algebra in a DS format

Solution:

Statement 1: 5p - 20 = 5

From this we can get the value of p, which is 5.

Answer options could be A or D. Therefore Statement 1 Alone is Sufficient

Statement 2: (p - 10)^2 = p^2

Expanding p^2 - 20p + 100 = p^2

Again we can get a value for p from this equation which is 5.

Therefore Statement 2 Alone is Sufficient.

Option D