Simplify $3\sqrt{45}-12\sqrt{5}+16\sqrt{20}$ leaving your answer in surd form

$29\sqrt{5}$

$14\sqrt{15}$

$12\sqrt{15}$

$11\sqrt{5}$

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Correct answer is A

$3\sqrt{45}-12\sqrt{5}+16\sqrt{20}\\ 3\sqrt{5\times 9}-12\sqrt{5}+16\sqrt{4\times 5}\\ 3\times 3\sqrt{5}-12\sqrt{5}+16\times 2\sqrt{5}\\ 9\sqrt{5}-12\sqrt{5}+32\sqrt{5}\\ 29\sqrt{5}$

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Simplify 3√45−12√5+16√203\sqrt{45}-12\sqrt{5}+16\sqrt{20}leaving your answer in surd form

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Simplify $3\sqrt{45}-12\sqrt{5}+16\sqrt{20}$ leaving your answer in surd form