This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following act on both Her-1 and Her-2 receptors - 
Select and explain. 
A. Imatinib, B. Erlotinib, C. Lapatinib, D. Gefitinib
C: Lapatinib
Answer: C: Lapatinib 
Explanation: Ans. is 'c' i.e., Lapatinib