Step 1: This is a "false statement" question, so we must find the one feature that does NOT fit hepatic adenoma. Hepatic adenoma is a benign solid neoplasm of the liver, so option (a) is true.
Step 2: Its strongest risk factor is prior or current use of oestrogens, classically the oral contraceptive pill (OCP), so option (b) is true.
Step 3: Hepatic adenomas are most common in YOUNGER females, typically 20 to 40 years of age, and are usually solitary. Stating that they occur in older females is incorrect, so option (c) is the false statement and is the answer.
Step 4: Because the adenoma lacks Kupffer cells, it does not take up the radio-colloid and appears cold on a sulphur-colloid isotope scan, so option (d) is true. Hence the false option is older females.