Explanation

Option C is correct because the 'Sword' symbol was allotted to Bilawal Bhutto Zardari's PPP for the 2018 elections after a gap of approximately 40 years. Option A is incorrect as this number does not match the historical record for the symbol allotment. Option B is incorrect because this figure is not associated with the return of the 'Sword' symbol. Option D is incorrect because this period is also inaccurate regarding the symbol's reappearance.