Goldman Sachs Group Inc. recommended buying Anglo American Plc call options on speculation the mining company's shares will extend a two-month rally as economic uncertainty subsides and its recent suspension of dividend payments help to bolster the company's finances, a newswire service reported.The brokerage advised buying calls expiring in December with a strike price of 1,900 pence. Shares in the mining company have gained 81 percent since reaching a five-year low on March 2.Anglo American, based in London, announced in February that it would suspend its dividend and only resume payments as soon as market conditions allow. The company also sold $2 billion worth of bonds last month after its finances were hit by a decline in commodity prices.The newswire service also reported that call options give the buyer the right to buy shares at a pre-agreed price on or before a specific date.