Four scariest words from a player

[deecee]

once clear possesion has been made by the offensive player catching the ball then its a spot throw in --

what would you call during a throw in Defender B1 and A1 go for the ball -- as B1 reaches for the ball which A1 just grabbed B1 fouls A1 with a hold -- almost simultaneous to catching the ball but probably a split second after the catch was made -- both feet were on the ground so noone is even airborne. Cleary the offensive player -- by a hair has possesion in bounds -- do you:

a) go spot throw in on the baseline
b) give the offensive team the baseline