Select the correct statement regarding mutation theory of evolution.

Single step large mutation is a cause of speciation.
The mutation theory of evolution proposes that new species arise suddenly through large mutations, leading to speciation. This theory was proposed by Hugo de Vries, a Dutch botanist who studied mutations in evening primrose. According to this theory, significant differences in a population arise abruptly due to large mutations, and these mutations can lead to the formation of new species in a single step. This concept contrasts with Darwin’s theory of gradual evolution through natural selection. 
(1) Alfred Wallace proposed natural selection, rather than mutation, as the mechanism of evolution.
(2) Small directional changes lead to evolution of species according to Darwin’s Natural Selection Theory. The
Mutation theory focuses on the role of large and random (directionless) mutations in speciation.
(4) The mutation theory of evolution suggests that large differences can arise suddenly in a population through single-step large mutations (saltations). It does not involve a gradual accumulation of differences over time,
as proposed by Charles Darwin.