Correct option is C
The Doorman’s Statement:
The doorman tells the guest, "Sir, this is the layout map of the common facilities like sauna, walking track, billiards room, swimming pool, etc."
Assumptions:
(I) The guest may like to use some of the facilities.
The doorman provides the map to inform the guest about the available facilities. This action suggests that the doorman assumes the guest might be interested in using some of these facilities.
Assumption I is implicit.
(II) The doorman gets a cut of the revenue generated through facilities which are paid services.
There is no evidence or indication in the statement that the doorman benefits financially from the guest using the facilities. The doorman might simply be performing his duty.
Assumption II is not implicit.
Thus, the correct option (c) Only assumption I is implicit.