The tubuloglomerular mechanism of renal autoregulation?

A is wrong because the myogenic mechanism depends on stretch receptors located on the afferent arteriole and the tubuloglomerular mechanism depends on Na reaching the macula densa located in the thick ascending limb. Just by location alone.... blood first enters the afferent arteriole which is where the receptors for the myogenic reflex are located and therefore is faster than waiting till the tubular fluid reaches the thick ascending limb.

C is wrong because Tubuloglomerular feedback responds to Na mostly
D is wrong because it uses local paracrine vasoconstrictors when it gets stretched...not ADH
E is wrong because its basically equally effective in response to both high and low blood pressure.