Ans. is 'b' i.e., Systemic sclerosiso Dysphagia, Raynaud's phenomenon, sclerodactyly in 35 years old lady suggest the diagnosis of systemic sclerosis (see above explanations).I think option 'b' needs some explanation here.Mixed connective tissue diseaseo Patients having the co-existence of features suggestive of SLE, polymyositis, Rheumatoid ahritis and systemic sclerosis.