Each of the following ethers has been shown to be or is suspected to be a mutagen,

Question:

Each of the following ethers has been shown to be or is suspected to be a mutagen, which means it can induce mutations in test cells. Write the structure of each of these ethers.
(a) Chloromethyl methyl ether
(b) 2-(Chloromethyl)oxirane (also known as epichlorohydrin)
(c) 3, 4-Epoxy-1-butene (2-vinyloxirane)