If company A and B combine under single ownership of control, this would be a merger.

a. horizontal
b. vertical
c. conglomerate
d. Herfindahl
e. There is not enough information to answer the question.

There is not enough information to answer the question -E

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.

answer; at prices that violate government price regulations;