Align Radio Buttons

Hello, I am quite new with bootstrap and I am trying to test it out and creating sample websites.So I came across with the radio button not aligning properly. I have this code snippet:

<div class="row">
        <div class="col form-check">
            <p class="h5 mt-4 mb-4">Production Machine</p>
            <div class="custom-control custom-radio col-md-10">
                <input type="radio" class="custom-control-input" id="defaultUnchecked1" name="defaultExampleRadios">
                <label class="custom-control-label" for="defaultUnchecked1">Desktop Machine</label>
            </div>
            <div class="custom-control custom-radio col-md-10">
                <input type="radio" class="custom-control-input" id="defaultUnchecked2" name="defaultExampleRadios">
                <label class="custom-control-label" for="defaultUnchecked2">Laptop Machine</label>
            </div>
        </div>
        <div class="col form-check">
            <p class="h5 mt-4 mb-4">Transportation Availability</p>
            <div class="custom-control custom-radio col-md-10">
                <input type="radio" class="custom-control-input" id="defaultUnchecked3" name="defaultExampleRadios">
                <label class="custom-control-label" for="defaultUnchecked3">Mass Transporation</label>
            </div>
            <div class="custom-control custom-radio col-md-10">
                <input type="radio" class="custom-control-input" id="defaultUnchecked4" name="defaultExampleRadios">
                <label class="custom-control-label" for="defaultUnchecked4">Private Vehicle</label>
            </div>
        </div>
    </div>

My problem is I cannot align them radio buttons properly. Here's a snapshot of it:

Any help would be much appreciated. Thank you very much :)