A$)$ Define the following variables in aasemblyy language: $$ number$3$: A doubleword$-$sized variable with the initial value of $56789$h $($in hexadecimal$).$ msg$1$ A string variable with the value "Welcome$$ myVar$1$: A byte sized variable with the initial value of $42.$ myWordVar$2$: A word$-$sized variable with the initial value of $1234.$ number $4$: A doubleword$-$sized variable without initializing.