Which statement correctly describes how ideal meters are connected in a direct-current circuit?
(a) Both the ammeter and the voltmeter are connected in series with the element whose quantities are to be measured.
(b) Because an ammeter has a very high resistance, it is connected in parallel with the element, whereas a voltmeter, having very low resistance, is connected in series.
(c) An ammeter is placed in series with the element whose current is to be measured, and a voltmeter is placed in parallel with the element whose potential difference is to be measured.
(d) An ammeter is placed in parallel with the element whose current is to be measured, and a voltmeter is placed in series with the element whose potential difference is to be measured.