In a shop, there were 4 dolls of different heights M, N, O and P. P is neither as tall as M nor as short as O . N is shorter than P but taller than O . If Anvi wants to purchase the tallest doll, which one should she purchase?

• A. Either M or P
• B. Either P or N
• C. Only P
• D. Only M
• E. None of these