A max$-$heap with capacity $20$ and size $10$ is stored in array A with the following content.

$A[1]=90$

$A[2]=80$

$A[3]=80,$

$A[4]=60,$

$A[5]=60,$

$A[6]=70,$

$A[7]=70,$

$A[8]=40,$

$A[9]=40,$

$A[10]=50.$

After ExtractMax$($A$),$ what is the value of $A[1]?$