It's currently my turn after the turn when my opponent activated BT9-103 [Kongou]'s effect. If I activate this card's [When Digivolving] effect and use an Option card, can I place that Option card on top of the security stack instead of placing it in the trash?

I used this card's [When Digivolving] effect to use P-037 [Yellow Memory Boost!], and I use P-037 [Yellow Memory Boost!]'s 1st [Main] effect to place that card in the battle area. What happens to "place the Option card used with this effect on top of your security stack face down instead of placing it in your trash" in this card's [When Digivolving] effect at such times?

I used this card's [When Digivolving] effect to use BT4-105 [Tactical Retreat!], then I placed this card itself on top of the security stack. At such times, after using BT4-105 [Tactical Retreat!], will it be placed in the security stack by the "place the Option card used with this effect on top of your security stack face down instead of placing it in your trash" effect?

I used this card's [When Digivolving] effect to use ST22-08 [Offensive Plug-In V], and ST22-08 [Offensive Plug-In V]'s [Main] effect linked that card to a Digimon. What happens to "place the Option card used with this effect on top of your security stack face down instead of placing it in your trash" in this card's [When Digivolving] effect at such times?