// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
contract Called {
	bool public myBool;
	function foo() public pure returns (string memory) {
		return "A";
	}
}

contract Caller {
	function callFooFunction(address _a) public returns (bytes memory) {
		(bool success, bytes memory data) = _a.call(abi.encodeWithSignature("foo()"));
		require(success, "Call failed");
		return data;
	}
}