Read the following passage and solve the questions based on it.
In a multiplex, nine shops are connected by corridors. Anyone visiting these shops must begin at the reception which is a part of shop number 1. From there, the other shops may be visited via the different corridors connecting them. The details of the corridors connecting the various shops are as under:
(i) Corridors connect the reception to shops number 2, 3
(ii) A corridor connects the reception to shop number 2 and then to shop number 4.
(iii) Corridors connect the shops number 2 and 3 to shop number 7.
(iv) Shop number 6 is connected to shops number 1, 5 and 9.
(v) Shop number 7 is connected to shop number 9.
(vi) Shops number 7 and 9 are connected to shop number 8.
Without visiting any shop more than once, what is the maximum number of shops that a person can visit?