u/T3RRONCINO

If I collect both the item for Ending A and the prayer for Ending C, will the prayer for ending C lock me out of ending A, or it's necessary to have it actually equipped when ascending to the last boss fight in order for it to trigger ending C?

What I'm looking for is basically having all the game items before doing both endings, but I'm not sure if having the prayer in the inventory and the Incense of the Envoys at the same time, can lock me out of ending A.

As the title says, I'm missing just 1% of the map, I'll attach some photos of my map. I've done the letter quest, gotten every prayer, every child of the moonlight, beaten Asterion and visited the finale C room, got every chalice, rosary bead, rosary knot, the 5 sisters and 5 mourning ladies, visited the room for the item needed for finale A. I've yet to do the golden bile flask quest, but asfaik it doesn't involve secret rooms or unexplored areas. What could I possibly be missing?

I've yet to do finale A and C, but I don't think they count towards map completion.