Quelling Blade interaction with Sleight of Fist + Cleave

For simplicity's sake, supposing that Ember Spirit has a Quelling Blade which deals 50% damage to non hero units, and Ember spirit has 50% cleave from whatever source, and that hypothetically Sleight of Fist does a static damage value of 100 to whatever unit it hits and this 100 damage is never reducted, if I hit a creep unit that stands beside a hero, how much cleave damage will the hero take?

A: 50 damage, meaning no Quelling Blade bonus damage added to cleave, i.e. creep is hit for 150 damage, but only 100 damage is accounted for cleaving purposes.

B: 75 damage, as the creep is hit for 150 damage due to the hipothetically 50% bonus damage of quelling blade.

C: None of the above.