$7,725 code A in box 14 only explains part of it. SE tax would only be $1,192.
Odd that the amount with code A is less than the amount with code C; the code-A amount would typically be the sum of code-B and code-C amounts. If the income is entirely from farm or entirely from non-farm, code-B and code-C amounts are usually left blank by the preparer of the Schedule K-1.
