An uncomplicated ventricular septal defect in a 5-year-old boy may be associated with which one of the following? Available marks are shown in brackets 1) A collapsing pulse. 2) Wide and fixed splitting of the second heart sound. 3) Clubbing of the fingers. 4) A pansystolic murmur of grade 4/6 in intensity. 5) Splenomegaly.