Which of the following statement$(s)$ is/are correct about class Basidiomycetes?
$(i)$ They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
$(ii)$ They grow in soil,on logs and tree stumps.
$(iii)$ They live inside plant bodies as parasites,e.g.,rusts and smuts.
$(iv)$ Some common members are Agaricus,Ustilago,and Puccinia.

• A
  Only $(i)$
• B
  Both $(i)$ and $(ii)$
• C
  $(ii), (iii)$ and $(iv)$
• D
  All of these