Comprehension Passage
Direction: Study the following information carefully and answer the questions given below:
A certain number of persons are sitting in a linear row facing north.
Z sits to the immediate right of M, who sits fourth from one of the extreme ends. Only eight persons sit between Z and H. P sits third to the left of H. The number of persons sitting to the left of P is two less than the number of persons sitting to the right of C, where only one person sits between them. D sits second to the left of C. Only seven persons sit between D and R. Not more than two persons sit to the right of I, who sits four places away from R.
How many persons are sitting in a row?
1
19
2
20
3
21
4
22
5
23