For each $of$ the integrals below, decide $(without$ calculation$)$ whether the integrals are positive, negative, $or$ zero. Let $Dbe$ the region inside the unit circle centered $on$ the

origin, $Tbe$ the top half $ofD,Bbe$ the bottom half $ofD,Rbe$ the right half $ofD.$

$(a){\displaystyle \underset{T}{\overset{\phantom{}}{}}}5$ydA $is$

$(b){\displaystyle \underset{T}{\overset{\phantom{}}{}}}1dAis$

$(c){\displaystyle \underset{B}{\overset{\phantom{}}{}}}(5y^3+y^5)dAis$

$(d){\displaystyle \underset{R}{\overset{\phantom{}}{}}}(5x^3+x^5)dAis$