Resampling in Google Earth Engine: exporting Sentinel 1A to Google Drive

I tried to export Sentinel 1A to Google Drive on Google Earth Engine. The function has a parameter name "scale" which determines pixel scale of the exported image.

Export.image.toDrive({
    image:imgtype[type],
    description: id,
    folder: folder,
    fileNamePrefix: id,
    region: region,
    scale: scale,
    maxPixels: maxPixels})
}

From the docs, it is said that Sentinel 1A has three resolution: 10m, 25m and 40m. My questions are:

1. If I set scale = one of three above scale, is the exported image original image or resampled image. And if it is resampled, then what resampling method is used?


2. If scale = another number (i.e. 20, 50, ...) then how GEE produce those images to Google Drive?