Using the phase diagram given below for iodine, answer the following question

a$.$ What is the normal $(1$atm$)$ boiling point for iodine in $C?$

b$.$ What is the melting point for iodine at $1$atm$C?$

c$.$ What state is present at room temperature and normal atmospheric pressure?

d$.$ What state is present at $186C$ and $1\mathrm{.}0$atm $?$

e$.$ What phase change would occur if temperature was constant at $150C$ but pressure was lowered continuously when initially $1$ atm? Use the proper name; melting, sublimation, etc...