Write the next sentence in this paragraph:

How to identify holstein cattle
Do a search on the internet or in a cattle breeds book for " holstein-friesians " or " holsteins.
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Study the characteristics of the breed.
Note the following :
Colouration: most holsteins are black-and-white.

Select from: (a). Typically, there are four levels of characteristics: good temperament, red sores, shiny noses and black, coarse hair. Bulls are naturally red, and some large, clunky cows are brown/golden colored.. (b). This colour pattern always is patchy, with big black, rounded patches over the animal's body. Some holsteins may be more white than black than others, and other holsteins may be more black than white than others.. (c). The coat is black with white markings or close-knit, colourless markings over the horns, jawlines, undersides, along the front legs and hindquarters. They are very fast and have quite strong fat.. (d). They usually have lighter coats, like black. White is their nickname, and it is used to describe the breed..
(b).