What will be the output of the following PHP code?$age = array("Peter"=>"35", "B

"35", "Ben"=>"37", "Joe"=>"43");print_r(array_change_key_case($age, CASE_UPPER"> "35", "B"> What will be the output of the following PHP code?$age = array("Peter"=>"35", "B "35", "B"> "35", "Ben"=>"37", "Joe"=>"43");print_r(array_change_key_case($age, CASE_UPPER"> "35", "B" /> "35", "Ben"=>"37", "Joe"=>"43");print_r(array_change_key_case($age, CASE_UPPER" /> "35", "Ben"=>"37", "Joe"=>"43");print_r(array_change_key_case($age, CASE_UPPER" />

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What will be the output of the following PHP code?$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");print_r(array_change_key_case($age, CASE_UPPER));

Options:

A . Array ( [PETER] => 35 [BEN] => 37 [JOE] => 43 )

B . Array ( [PeTeR] => 35 [BeN] => 37 [Joe] => 43 )

C . Array ( [peter] => 35 [ben] => 37 [joe] => 43 )

D . Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )

Answer: Option A

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