Task: Question Answering
Input (English): Question: Which of the following statements about focal nodular hyperplasia of the liver is true? 
 Options:  <1> It is considered that its appearance is related to the consumption of contraceptives. <2> The risk of breakage hemoperitoneum is similar to that of the adenoma. <3> There is a risk of tumor degeneration. <4> It behaves as a focal hypovascular lesion in computed tomography with contrast administration. <5> In the histological study of the lesion, in addition to hepatocytes, bile ducts and other liver cells can be observed.
Output (English): 5