For the visualization of parasitic forms, it is necessary to collect the fecal material and examine it macroscopically and microscopically. Macrosc...

For the visualization of parasitic forms, it is necessary to collect the fecal material and examine it macroscopically and microscopically. Macroscopic analysis allows the observation of general characteristics of the feces, which may be related to pathologies or infections. In addition, it is possible to observe adult worms or parts of them. For the visualization of eggs, larvae, cysts, and oocysts, it is necessary to analyze them microscopically. This examination can be direct, or techniques can be used to facilitate their visualization, such as the Ritchie method, formol-ether, Blagg, or MIFC.
Considering this information and the content studied about laboratory methods applied to parasitology, analyze the following statements:
I. The formol-ether method is a quantitative analysis method.
II. The Blagg method allows the use of feces preserved with MIFC.
III. The Ritchie method uses zinc sulfate as a reagent.
IV. The Ritchie method can use ethyl acetate as a reagent.
V. The formol-ether method is based on parasite flotation.
Only what is stated in:


1. Correct: II and IV.
2. I, II, and V.
3. II and III.
4. II and V.
5. I, II, and III.