Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to venetian plaster [title] Choose a plaster. [step] Venetian plaster comes in two varieties: synthetic and lime-based. Which one you use will depend on your budget and level of expertise.

Ending1: The main difference between synthetic and lime plaster is that lime plaster comes in multiple colors, which makes it more porous, while lime plaster comes in shades of lime. Lime plaster is lighter in color and gentler than plaster plaster. Ending2: Either style of plaster may be the most difficult to release, however. [substeps] Synthetic plaster will tear for a longer period of time than lime plaster, and should be reserved for use on plaster floors. Ending3: [substeps] Lime-based plasters are true venetian plasters. These plasters will, over time, turn to stone. Ending4: [substeps] Synthetic plaster is thinner and more flexible, and it can be easily worked with concrete floors. Lime plaster is more resilient and is better for concrete floors than lime.

Answer format: ending1/ending2/ending3/ending4