If a trader developed a series of algorithms and bots to help her profit from predictable price trends, then which of the following algorithms would have resulted in the highest profit? $($Note: Assume there were no transaction costs associated with the transactions and that purchase and sell orders occur immediately.$)$

If the price of Hylack Enterprise's stock decreases by exactly $$1$ in $15$ minutes, submit an order to purchase $1,500$ shares. Then, if the stock price increases by at least $$4,$ submit an order to sell $1,500$ shares.

If the price of Hylack Enterprise's stock decreases by exactly $$1$ in $15$ minutes, submit an order to purchase $1,000$ shares. Then, if the stock price increases above $$8,$ submit an order to sell $1,000$ shares.

If the price. of Hylack Enterprise's stock decreases by exactly $$2$ in $15$ minutes, submit an order to purchase $600$ shares. Then, if the stock price increases by more than $100$ percent in the last hour, submit an order to sell $600$ shares.

If the price of Hylack Enterprise's stock decreases by exactly $$2$ in $15$ minutes, submit an order to purchase $3,000$ shares. Then, if the stock price increases at all in any given $15-$minute interval, submit an order to sell $3,000$ shares. $q,$

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