As long as the Sidehoppers haven't been lured to the right, fall into the pit and use a Power Bomb to kill them or dodge them. Place a Power Bomb one tile below the Morph tunnel to the left to overload PLMs using the item.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "direct",
    "morphed": true
  }
}

Requires:

"canPowerBombItemOverloadPLMs"
{
  "itemNotCollectedAtNode": 10
}
"canRiskPermanentLossOfAccess"
"h_artificialMorphSpringBall"
{
  "or": [
    "canInsaneJump",
    "h_artificialMorphPowerBomb",
    {
      "enemyDamage": {
        "enemy": "Sm. Sidehopper",
        "type": "contact",
        "hits": 1
      }
    }
  ]
}
"h_artificialMorphPowerBomb"

Clears obstacles: B, C

Dev note: Techincally, obstacles B and C are not cleared until exiting G-mode, but those obstacles are not used by G-mode strats. Only this door and the one just below the hopper pit on the right will benefit from this, and only without Morph or Bombs, otherwise PLMs could be overloaded simpler ways.