I'm going with B also.
On A, the tarp would rot fast in that heat and sun, the crossbow would be about useless after day 2 since I've very rarely ever found one of the bolts after firing a crossbow... The water tablets are just a convenience. 40 of them wouldn't work for a year anyway so it would just be a delay in setting up a purification system. The paracord would be helpful. The bowie knife wouldn't be as helpful as an axe would be.
On B, the pot has a number of uses, the matches would be helpful if used sparingly. The animal trap could be useful for any small critters that might be on the island and that would be a welcome change from seafood. The axe would be useful for firewood, stripping bark or vines for rope uses, opening coconuts, and could be finessed into cleaning fish, opening shellfish, etc. None of that would matter though because day three, I'd be overcome with an unending urge to try spearing a fish, would spear my foot and die of blood poisoning before sundown... But it would be a ton of fun right up until that point.