A). (a) A bull is an optimistic operator who first buys and then sells shares in expectation of the price going up; a bear is a pessimistic market operator who sells the shares in expectation of buying them back at a lower price.
B). There is nothing significantly different as both operate in the capital market
C). Bull is one who first sells a share and then buys it at a lower price, bear means one who first buys and then sells it in expectation of prices going up.
D). A bull is ready to buy any share; a bear only deals in government securities