Consider the following question and decide which of the statements is sufficient to answer the question.
Question: 

Find the value of $$p^2 — 4,$$ 
Statements:
1) $$\frac{p}{2} = \frac{5}{7}$$

2) $$p^2 - q^2 = 729$$

A

Only 1 is sufficient

B

Either 1 or 2 is sufficient

C

Neither 1 nor 2 is sufficient

D

Only 2 is sufficient