Statement -1 : `Na_(2)HPO_(3)` is not an acid salt.
Statement -2 : `Na_(2)HPO_(3)` on heating decomposes to give phosphine gas and a mixture of phosphates.
A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true and (R) is false
D. (A) is false but (R) is true