Arrange the following in decreasing order of enol content:
i. Diethyl malonate
ii. Acetoacetic easter (AAE or EAA)
iii. Acetyl acetone
iv. `PhCOH_(2)COH_(3)`
A. `(iv) gt (iii) gt (ii) gt (i)`
B. `(iv) gt (iii) gt (i) gt (ii)`
C. `(iii) gt (iv) gt (ii) gt (i)`
D. `(iii) gt (iv) gt (i) gt (ii)`
