给出两个英文文本，将它们合并成一个文本，并在合并后的文本中标记出两个文本的来源。
Text A: The quick brown fox jumps over the lazy dog.
Text B: She sells seashells by the seashore.
Text A: The quick brown fox jumps over the lazy dog.
Source: Text A

Text B: She sells seashells by the seashore.
Source: Text B

Combined Text: The quick brown fox jumps over the lazy dog. She sells seashells by the seashore. (Source: Text A, Text B)