The correct answer is B. Omniscient third-person
Explanation:
In narrative texts, the point of view refers to the type of narrator or voice that describes the events and other characters in a story. In the case of omniscient third-person this can be identified because it uses the third person pronoun "he", "she", "it" rather than "I" or "you" and also in this type of point of view the narrator knows the thoughts of all or most of the characters. This can be seen in the excerpt presented because in this the narrator knows the though of the character such as in " She thought for several seconds, reckoning up prices and also wondering for how large a sum she could ask" and also all the characters are described using the pronouns "she" and "it" which shows the narrator is external and not a character of the story (third-person) and also an omniscient narrator.