A lot or building may be occupied by the following conditional uses:
(a) Communication station, center, studio or tower, subject to the requirements of Chapter 1136.
(b) Day-care center, provided it is located within the building of another principal use listed in this district.
(c) Heliport and helistop, provided it is not located within one-quarter (1/4) mile of an R district.
(d) Hotel, motel, and convention center and a restaurant in association with these uses.
(e) Public utility or public use, subject to the requirements of Chapter 1135.
(f) School, generalized and specialized private instruction above the 12th grade level.