Identify the correct statements from the following:
a. is used as a refrigerant ice-cream and frozen food.
b. The structure of customs12 six carbon rings and 25 five carbon rings
c. ZSM-5, a type of zeolite, is used to convent alcohol into gasoline.
d. CO is a colorless and odorless gas
1. (a) and (c) only
2. (b) and (c) only
3. (c) and (d) only
4. (a), (c) and (c) only
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