Question $2(1$ point$)$

A firm has the production function

$$

f$\backslash$left$($x$,$y$\backslash$right$)=$x$^\{0\mathrm{.}90\}$y$^\{0\mathrm{.}80\}$

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This firm has

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Question $2$ options:

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constant returns to scale.

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decreasing returns to scale and diminishing marginal products for factor x$.$

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decreasing returns to scale and increasing marginal product for factor x$.$

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increasing returns to scale and decreasing marginal product of factor x$.$

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None of the above.