If mv<pv<0 , is v > 0 ?
(1) m < p
(2) m < 0
v cant taken on -ve values as this will alter the condition in the stem, consider v=-1, m=3, p=4, this will make mv>vp
only +ve values of v will satisfy the condition-- suff
since mv and pv should ve -ve, if m is -ve, v should be > 0, to make mv -ve.--suff , Hence D.