Atomic number of which of the following elements is greater than that of Calcium?

Atomic number of which of the following elements is greater than that of Calcium?
निम्नलिखित तत्वों में से किस तत्व की परमाणु संख्या कैल्शियम की तुलना में अधिक है?
(a) Chlorine/क्लोरीन
(b) Argon/आर्गन
(c) Sulphur/सल्फर
(d) Scandium/स्कैंडियम

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